71 results found for biology

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00:35:00

Telomeres: Telling Tails

by Elizabeth Blackburn
Telomeres: Telling Tails
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1849 views
Rating:

Telomeres protect chromosome ends and help stabilize the genome. Throughout human life and in aging, telomeres often erode down, eventually causing cells to malfunction or die. The highly regulated cellular enzyme telomerase adds telomeric DNA to tel....

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00:29:00

The Killer Defence

by Peter Doherty
The Killer Defence
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1460 views
Rating:

Immune surveillance by virus-specific CD8+ cytotoxic T lymphocytes (CTLs), or killer T cells, has long been known to be central to the control of acute infections and some cancers, though the role of CTL memory in the rapid recall of immune protectio....

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00:31:00

Minimizing a Bacterial Genome by Global Design and Synthesis

by Hamilton Smith
Minimizing a Bacterial Genome by Global Design and Synthesis
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 2137 views
Rating:

In 2010, we chemically synthesized the 1078 Kb Mycoplasma mycoides genome and transplanted it into a recipient cell cytoplasm to create a 'synthetic cell', JCVI-syn1.0 (Science, 329, 52-56, 2010). We identified several hundred non-essential genes by ....

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00:39:00

Role of Nitric Oxide and Cyclic GMP in Cell Signaling and Drug Development

by Ferid Murad
Role of Nitric Oxide and Cyclic GMP in Cell Signaling and Drug Development
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1778 views
Rating:

Nitric oxide research has grown rapidly with about 150,000 research publications describing its biological effects. It is an important messenger molecule that affects most tissues and biological processes. Many effects of nitric oxide are mediated by....

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00:30:00

Ion Channels: Their Discovery, their Function and their Role in Diseases

by Erwin Neher
Ion Channels: Their Discovery, their Function and their Role in Diseases
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1559 views
Rating:

The concept of bioelectricity emerged in the late 18th century, based on the experiments of Galvani and Volta. Sixty years ago, Hodgkin and Huxley showed that the nerve impulse is a result of permeability changes of the nerve membrane. This raised th....

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00:31:00

The Origins of Cellular Life

by Jack Szostak
The Origins of Cellular Life
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1612 views
Rating:

The complexity of modern biological life has long made it difficult to understand how life could emerge spontaneously from the chemistry of the early earth. We are attempting to synthesize simple artificial cells in order to discover plausible pathwa....

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00:30:00

The Origin of Reversible Protein Phosphorylation as a Regulatory Mechanism

by Edmond Fischer
The Origin of Reversible Protein Phosphorylation as a Regulatory Mechanism
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1658 views
Rating:

Reversible protein phosphorylation can be considered one of the most prevalent mechanism by which eukaryotic cellular events are regulated. It is directly involved in numerous pathological conditions, and bacterial and viral diseases. This process wa....

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00:27:00

A Crime against Humanity

by Richard Roberts
A Crime against Humanity
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1707 views
Rating:

When Monsanto first tried to introduce GMO seeds into Europe there was a backlash by the Green parties and their political allies, who feared that American agro-business was about to take over their food supply. Thus began a massive campaign not agai....

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00:31:00

Finding Mutations that Affect Immunity

by Bruce Beutler
Finding Mutations that Affect Immunity
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1606 views
Rating:

Beginning with an exception to normal function caused by a genetic aberration, one may hope to find at least one protein with non-redundant function in a certain biological process. This approach permitted the identification of the receptor for bacte....

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00:34:00

Insight into the Laws of Nature for Biological Evolution

by Werner Arber
Insight into the Laws of Nature for Biological Evolution
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1708 views
Rating:

Both evolutionary biology and genetics have their roots 150 years ago in work with phenotypic variants of plants and animals. In contrast, microbial genetics originating as recently as the 1940s, rapidly revealed that filamentous DNA molecules are th....

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00:29:00

From Proto-oncogenes to Precision Oncology

by Harold Varmus
From Proto-oncogenes to Precision Oncology
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1814 views
Rating:

The diagnosis, classification, and treatment of human cancers are being transformed by scientific discoveries that were strongly influenced by the discovery of the c-src proto-oncogene, as described in the lecture by Michael Bishop. The path to this ....

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00:32:00

Tickling Worms – Surprises from Basic Research

by Martin Chalfie
Tickling Worms – Surprises from Basic Research
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1350 views
Rating:

Research, at least my research, has never been linear. I have found that my lab and I often double back on problems after years of inactivity or go off in entirely new directions as dictated by the work and people's interests This lack of direction r....

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00:29:00

How to Model the Action of Complex Biological Systems on a Molecular Level

by Arieh Warshel
How to Model the Action of Complex Biological Systems on a Molecular Level
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 2103 views
Rating:

Despite the enormous advances in structural studies of biological systems we are frequently left without a clear structure function correlation and cannot fully describe how different systems actually work. This introduces a major challenge for compu....

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00:25:00

Physical perspective on cytoplasmic streaming

by Ray Goldstein
Physical perspective on cytoplasmic streaming
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1280 views
Rating:

Professor Ray Goldstein FRS is the Schlumberger Professor of Complex Physical Systems at the University of Cambridge. Here he describes a biological example of topological inversion, with relevance to engineering problems in human technology.

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00:37:00

Generating the Fuel of Life

by John Walker
Generating the Fuel of Life
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1372 views
Rating:

The lecture will be devoted to the topic of how the biological world supplies itself with energy to make biology work, and what medical consequences ensue when the energy supply chain in our bodies is damaged or defective. We derive our energy from ....

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00:31:00

Biological Evolution in the Context of Cosmic Evolution and of Cultural Evolution

by Werner Arber
Biological Evolution in the Context of Cosmic Evolution and of Cultural Evolution
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1589 views
Rating:

After reconsidering the very long time periods in cosmic evolution, we will focus our attention to the evolutionary development of living organisms on our planet Earth. The genetic variants (mutations), which are occasionally produced, are alteratio....

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00:33:00

Structural Biology and its Translation into Practice and Business: My Experience

by Robert Huber
Structural Biology and its Translation into Practice and Business: My Experience
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1588 views
Rating:

As a student in the early 1960s, I had the privilege to attend winter seminars organized by my mentor, W. Hoppe, and by M. Perutz, which took place in a small guesthouse in the Bavarian-Austrian Alps. The entire community of a handful of protein cry....

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00:36:00

A Personal View of the History of Nuclear Magnetic Resonance in Biology and Medicine

by Kurt Wurthrich
A Personal View of the History of Nuclear Magnetic Resonance in Biology and Medicine
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1755 views
Rating:

In 1952, Felix Bloch and Edward Purcell were awarded the Nobel Prize in Physics for the description of the phenomenon of nuclear magnetic resonance (NMR). Over the years, NMR has been used in a wide range of fundamental studies in physics, and in the....

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00:34:00

Synthetic Biology for Genetic Engineering in the 21st Century

by Hamilton Smith
Synthetic Biology for Genetic Engineering in the 21st Century
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1349 views
Rating:

Synthetic biologists seek to design, build, and test novel biological systems. We have chemically synthesized a bacterial genome (Mycoplsama mycoides, 1078Kb) and brought it to life by transplantation into the cytoplasm of a related species. We are....

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00:32:00

The Revolution of Personalized Medicine: Are We Going to Cure All Diseases and at What Price?

by Aaron Ciechanover
The Revolution of Personalized Medicine: Are We Going to Cure All Diseases and at What Price?
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1467 views
Rating:

Many important drugs such as penicillin, aspirin, or digitalis, were discovered by serendipity - some by curious researchers who accidentally noted a "strange" phenomenon, and some by isolation of active ingredients form plants known for centuries to....

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00:31:00

Multiscale Simulations of the Functions of Biological Molecules

by Arieh Warshel
Multiscale Simulations of the Functions of Biological Molecules
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 2771 views
Rating:

Despite enormous advances in structural studies of biological systems we are frequently left without a clear structure-function correlation and cannot fully describe how different systems actually work. This introduces a major challenge for computer....

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00:35:00

GFP and After

by Martin Chalfie
GFP and After
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1696 views
Rating:

Since its introduction as a biological marker, the Aequorea victoria Green Fluorescent Protein (GFP) has had a strong impact in biology, being used in an ever-increasing variety of ways. I will review a bit of the history of GFP and show how having ....

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00:31:00

Atmosphere Climate and Chemistry in the Anthropocene

by Paul Crutzen
Atmosphere Climate and Chemistry in the Anthropocene
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1346 views
Rating:

Despite their relatively small mass, 10-5% of the earth biosphere as a whole, generations of ambitious 'homo sapiens' have already played a major and increasing role in changing basic properties of the atmosphere and the earth's surface. Human activ....

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01:17:00

Genetics, epigenetics and disease

by Adrian Bird
Genetics, epigenetics and disease
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1805 views
Rating:

The human genome sequence has been available for more than a decade, but its significance is still not fully understood. While most human genes have been identified, there is much to learn about the DNA signals that control them. This lecture describ....

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01:04:00

Molecular chaperones: how cells stop proteins from misbehaving

by R. John Ellis
Molecular chaperones: how cells stop proteins from misbehaving
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 2567 views
Rating:

Proteins are the action molecules of all cells, and to function properly, protein chains must fold and assemble correctly. But each chain of every protein runs the risk that it will combine with one or more identical chains to form nonfunctional aggr....

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01:03:00

From bears’ winter-sleep to advanced antibiotics

by Ada Yonath
From bears’ winter-sleep to advanced antibiotics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1412 views
Rating:

Professor Ada Yonath, Weizmann Institute of Science, Israel. Ā To facilitate instant recovery of active life once bears wake up from their winter sleep, nature provides ingenious mechanism based on periodic packing of their ribosomes, the cellular ma....

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01:07:00

Finding patterns in genes and proteins: decoding the logic of molecular interactions

by Sara Teichmann
Finding patterns in genes and proteins: decoding the logic of molecular interactions
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1662 views
Rating:

Dr Sarah Teichmann is based at the MRC Laboratory of Molecular Biology at the University of Cambridge. Ā In the post-genomic era, high-throughput methods are providing us with a deluge of data about genes and proteins. What knowledge about biology do....

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00:58:00

Regenerating organs and other small challenges

by Molly Stevens
Regenerating organs and other small challenges
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1265 views
Rating:

A disagreeable side effect of longer life-spans is the failure of one part of the body ā€“ the knees, for example ā€“ before the body as a whole is ready to surrender. The search for replacement body parts has fueled the highly interdisciplinary fiel....

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00:16:00

Using polymers to reduce bacteria in wounds

by Sheila MacNeil
Using polymers to reduce bacteria in wounds
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1887 views
Rating:

A research group provide details of their work in helping wounds to heal by developing polymers that will reduce the bacterial infections

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00:13:00

How plants colonised the land millions of years ago

by Claire Humphreys
How plants colonised the land millions of years ago
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1557 views
Rating:

Functional nature of mycorrhizal-like symbiosis in a liverwort

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00:29:00

Social and anti-social cells

by Dawn Walker
Social and anti-social cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1438 views
Rating:

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00:18:00

Using synthetic biology techniques to manipulate carotenoid biosynthetic pathways

by Paul Davison
Using synthetic biology techniques to manipulate carotenoid biosynthetic pathways
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 10003 views
Rating:

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00:14:00

Tissue engineering

by Nadir Osman
Tissue engineering
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1452 views
Rating:

The challenge of tissue-engineering - a repair material for use in pelvic floor surgery

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00:03:00

The social life of cells

by Rod Smallwood
The social life of cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1433 views
Rating:

How do cells communicate with each other?

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00:02:00

Using polymers to detect bacteria

by Sheila MacNeil
Using polymers to detect bacteria
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1966 views
Rating:

How can we make early detection of bacterial wound infection easier.

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00:01:00

Making bacteria glow to aid healing

by Sheila MacNeil
Making bacteria glow to aid healing
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 3372 views
Rating:

Sheila MacNeil outlines an interesting technique.

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00:02:00

Raman spectra of bacteria on nano particles

by Wei Huang
Raman spectra of bacteria on nano particles
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 5057 views
Rating:

How we can use theĀ Raman spectra of bacteria on nano particles

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00:03:00

Bugs and trash

by Various Presenters
Bugs and trash
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 2091 views
Rating:

Using microorganisms to clear pollution.

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00:09:00

Breast Cancer Susceptibility Gene BRCA2

by Angelica Medina
Breast Cancer Susceptibility Gene BRCA2
for 18-22 and upwards,
Lectures | 18-22 and upwards | 12 years ago | 1385 views
Rating:

BRAC2 is a tumor suppressor gene. Its protein product interacts with other proteins to assist regulation of DNA repair, transcription and cell cycle checkpoints. BRAC2 gene disruption may lead to protein truncation, mutations and loss of function. Ce....

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00:05:00

Retinoblastoma

by Kyla McKay
Retinoblastoma
for 18-22 and upwards,
Lectures | 18-22 and upwards | 12 years ago | 1553 views
Rating:

Kyla discusses an overview of the disease, the most common method in which it is diagnosed, as well as the major chemotherapeutics used to treat it.

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00:12:00

Human Papilloma Virus

by Cassandra Flores
Human Papilloma Virus
for 18-22 and upwards,
Lectures | 18-22 and upwards | 12 years ago | 1645 views
Rating:

The aim of this presentation is to provide an overview of the Human Papilloma Virus (HPV) and the associated carcinogenic pathologies of HPV. The predominant cellular players discussed in HPV pathologies are p53 and viral oncoprotein E6. In addition,....

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00:10:00

Bioenergetics of Cancer Cells

by Elda Rueda
Bioenergetics of Cancer Cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 12 years ago | 1758 views
Rating:

A brief summary from the literature about cancer cells' metabolism; 1) the major pathways cancer cells use to generate energy and macromolecules efficiently and rapidly and 2) the enzymes cancer cells up-regulate to control those pathways.

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00:08:00

Lapatinib treatment for HER2 Positive Breast Cancer

by Abir Kahn
Lapatinib treatment for HER2 Positive Breast Cancer
for 18-22 and upwards,
Lectures | 18-22 and upwards | 12 years ago | 4194 views
Rating:

Discussion on the background information, etiology, and treatment of HER2 positive breast cancer.

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00:31:00

Networks in ecosystems and financial systems

by Robert May
Networks in ecosystems and financial systems
for 18-22 and upwards,
Lectures | 18-22 and upwards | 13 years ago | 1076 views
Rating:

This talk surveys our growing understanding of the relationships between the network structure of ecological networks ? both in mathematical models and in the real world ? and their ability to withstand disturbance, natural or human-created.

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00:10:00

Origin of Life on Earth: Abiogenesis

by Yangguang Ou
Origin of Life on Earth: Abiogenesis
for 18-22 and upwards,
Lectures | 18-22 and upwards | 13 years ago | 5510 views
Rating:

This presentation portrays a general overview of the theory of abiogenesis and its conceptual history. From the theory of spontaneous generation to biogenesis to the modern-day abiogenesis, the changing perception of the origin of life is discussed.....

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00:10:00

Genetic Programming

by Cody Jordan
Genetic Programming
for 18-22 and upwards,
Lectures | 18-22 and upwards | 13 years ago | 1496 views
Rating:

Genetic Programming is an artifical intelligence technique based off of natural selection. A generation of programs is generated, then tested using a fitness function. After that successful programs are altered and replicated successively until a d....

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01:02:00

Thinking like a vegetable: how plants decide what to do

by Ottoline Leyser
Thinking like a vegetable: how plants decide what to do
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1310 views
Rating:

Plants monitor a wide range of information from their surrounding environment. They combine information of multiple sorts, and respond in an appropriate way. In plants there is no brain, and the information processing is distributed across the plant ....

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01:12:00

Brain development and brain repair.

by Marc Tessier-Lavigne
Brain development and brain repair.
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1478 views
Rating:

The human brain is made up of close to a trillion nerve cells (or neurons), each of which makes connections with, on average, hundreds of other nerve cells, to form the complex neuronal circuits that control all brain activities, including perception....

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01:08:00

Engineered zinc finger proteins and gene expression

by Aaron Klug
Engineered zinc finger proteins and gene expression
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1894 views
Rating:

It has long been the goal of molecular biologists to design DNA binding proteins for the specific control of gene expression. The zinc finger design, discovered by Sir Aaron Klug 20 years ago, is ideally suited for such purposes, discriminating betwe....

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01:12:00

Deciphering disease: cells and disruption of their communication

by Dario Alessi
Deciphering disease: cells and disruption of their communication
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1398 views
Rating:

The human body may seem to be no more than a bundle of tissues and organs, yet the cells these are made from are capable of interacting, communicating and performing complex tasks. Our cells' capacity to interact in this way enables humans to adapt t....

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00:58:00

Stem Cells to Synapses

by Andrea Brand
Stem Cells to Synapses
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1445 views
Rating:

One of the goals of research in neurobiology is the repair and regeneration of neurons after damage to the brain or spinal cord. Before we can understand how to repair the nervous system we must first learn how the nervous system is put together.

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01:03:00

Structure and the living cell

by Iain Campbell
Structure and the living cell
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1370 views
Rating:

In this lecture Iain Campbell will discuss methods of studying the structure of molecules and cells and how they have advanced in the 350 years since early microscopes gave the first glimpse of single cells. He will show how modern methods are allowi....

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01:05:00

Microscopy goes cold: secrets of frozen viruses

by Tony Crowther
Microscopy goes cold: secrets of frozen viruses
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1476 views
Rating:

Viruses are a major cause of death and disease. Too small to be seen by light microscopy, they were first visualised about 50 years ago by electron microscopy. Dr. Crowther describes his work on the development of the methods and illustrates how he h....

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01:08:00

The Puppet Master: How the brain controls the body

by Daniel Wolpert
The Puppet Master: How the brain controls the body
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1693 views
Rating:

The effortless ease with which humans move our arms, our eyes, even our lips when we speak masks the true complexity of the control processes involved. Professor Daniel Wolpert explains how the brain deals with this and can perform optimally in the p....

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01:19:00

Beyond the human genome project

by Eric Lander
Beyond the human genome project
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1937 views
Rating:

Dr Lander and his colleagues have developed many of the key tools and generated many of the key information resources for modern mammalian genomics. Their work includes mapping and sequencing of the human, mouse, and other genomes. He was elected a m....

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01:09:00

Adventures in vascular biology

by Salvador Moncada
Adventures in vascular biology
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1466 views
Rating:

Thirty years ago it was thought that the endothelium, a layer of thin, flat cells that line the interior surface of blood vessels was inert. However, major discoveries since then have demonstrated that it is a highly metabolic organ involved in maint....

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01:05:00

Genes, worms and the new genetics

by Julie Ahringer
Genes, worms and the new genetics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1636 views
Rating:

A surprising finding over the past 20 years is that all animals have many of the same genes and that they use them in similar ways to grow and develop. These similarities mean that much of what is learned about what genes do in simple animals such as....

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01:13:00

Magnetic brain stimulation and brain function?

by Alan Cowey
Magnetic brain stimulation and brain function?
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1380 views
Rating:

Like his nineteenth century contemporaries David Ferrier tried to reveal cerebral localisation of function by direct electrical stimulation of the exposed brain of animals. With some notable exceptions the results were disappointing and confined to t....

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01:08:00

Perception, deception and reality

by David Attenborough
Perception, deception and reality
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 2096 views
Rating:

Sir David Attenborough delivers the 2003 Michael Faraday Lecture entitled: Perception, deception and reality

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01:15:00

Vision for knowledge: Knowledge for vision

by Richard Gregory
Vision for knowledge: Knowledge for vision
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1334 views
Rating:

An evolutionary development of perception is suggested - from passive reception to active perception to explicit conception - earlier stages being largely retained and incorporated in later species. A key is innate and then individually learned knowl....

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01:00:00

Science not stamp collecting? Botany from 1759 to 2059

by Stephen Hopper
Science not stamp collecting? Botany from 1759 to 2059
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1431 views
Rating:

Professor Hopper considers the vital role that the study of plant taxonomy and systematics has played in plant science. He considers, in particular, how these fields are transforming to meet the needs of 21st Century science as we address the challen....

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01:23:00

We are what we remember.

by Eric Kandel
We are what we remember.
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1262 views
Rating:

n this lecture, Eric R Kandel considers the neural systems and molecular mechanisms that contribute to learning and long-term memory and discusses how our insights into memory storage are allowing us to understand various forms of age related memory ....

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01:02:00

Reprogramming the code of life

by Jason Chin
Reprogramming the code of life
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1521 views
Rating:

The information for synthesizing the molecules that allow organisms to survive and replicate is encoded in genomic DNA. In the cell, DNA is copied to messenger RNA, and triplet codons in the messenger RNA are decoded in the process of translation to ....

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01:00:00

The new biology of ageing

by Linda Partridge
The new biology of ageing
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1328 views
Rating:

Research into ageing has been rejuvenated by the discovery of mutations in single genes that extend the lifespan of laboratory animals. Some of the signalling pathways involved, particularly the insulin/Igf-like pathway, have effects on lifespan acro....

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01:16:00

A molecular window into speech and language

by Simon Fisher
A molecular window into speech and language
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1852 views
Rating:

Our capacity for complex speech and language remains one of the most intriguing aspects of being human. It has long been suspected that some answers to this enigma will be found buried within the genome. With recent advances in genetic technologies, ....

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01:01:00

Mapping memory: the brains behind remembering

by Eleanor Maguire
Mapping memory: the brains behind remembering
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1186 views
Rating:

Historically memory research has focussed on the hippocampus, a structure deep in the brain's temporal lobes. Damage to the hippocampus is known to have a devastating impact on the ability to form new memories as well as compromising recollection of ....

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01:08:00

Plant and animal communication

by John Pickett
Plant and animal communication
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1396 views
Rating:

Organisms of all kinds use signals comprising minute amounts of natural chemicals. The exploitation of semiochemicals is demonstrated with dramatic success in the management of pests and parasitic weeds in resource-poor East African cereal farming.

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01:08:00

From proteins to drugs

by Mark Pepys
From proteins to drugs
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1383 views
Rating:

The normal proteins which circulate in human blood are either known or presumed to have beneficial functions. However normal immunity and inflammation proteins can cause or exacerbate disease in addition to helping to resist infections.

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01:06:00

Decoding consciousness

by Geraint Rees
Decoding consciousness
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1340 views
Rating:

Everything we know about the world comes to us through our brain. Yet for each of us our own conscious mental world of thoughts and feelings is isolated and private. Despite centuries of research, language or gesture remains the only way we can disco....

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00:58:00

Self-Assembly: Nature’s way to do it

by Kuniaki Nagayama
Self-Assembly: Nature’s way to do it
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1346 views
Rating:

Biology operates at two levels: the large scale which we can see and the underlying microscopic one. The amazing way in which intermolecular forces cause protein arrays to self-assemble, enabling Nature to fabricate the large scale components of livi....

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Bert Sakmann

by Bert Sakmann
Bert Sakmann
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1705 views
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Winner of the Nobel Prize 1991 in Physiology / Medicine 1991 together with Erwin Neher 'for their discoveries concerning the function of single ion channels in cells'

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