Latest Biology News from Bio-Medicine.Org

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American Society for Microbiology honors Ryan Johnson

A 2010 American Society for Microbiology (ASM) Raymond W. Sarber Award is being presented to Travis D. Hull, an undergraduate student at Juniata College, Huntington, PA, for his work on transposon mutaganized genes. It is presented in honor of the late Raymond W. Sarber and his contributions to the growth and advancement of the ASM. Johnson has spent the past two years working on the s...

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Berkeley scientists find new way to get physical in the fight against cancer

Conventional biological wisdom holds that living cells interact with their environment through an elaborate network of chemical signals. As a result many therapies for the treatment of cancer and other diseases in which cell behavior goes awry focus on drugs that block or disrupt harmful chemical signals. Now, a new road for future therapies may have been opened with scientific evidence for a...

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Barrier in mosquito midgut protects invading pathogens

What: Scientists studying the Anopheles gambiae mosquito the main vector of malaria have found that when the mosquito takes a blood meal, that act triggers two enzymes to form a network of crisscrossing proteins around the ingested blood. The formation of this protein barrier, the researchers found, is part of the normal digestive process that allows so-called "healthy" or commensal gut ba...

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U of Minnesota researcher discovers how electricity moves through cells

Researchers at the University of Minnesota have created a molecular image of a system that moves electrons between proteins in cells. The achievement is a breakthrough for biology and could provide insights to minimize energy loss in other systems, from nanoscale devices to moving electricity around the country. The research, led by Carrie Wilmot, an associate professor in the College of...

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Center aims to cut obesity in black, Latino New Yorkers

NEW YORK (March 3, 2010) A $6 million grant from the National Heart, Lung and Blood Institute (NHLBI) has funded the creation of ORBIT: Obesity Related Behavioral Intervention Trials to focus on reducing obesity and obesity-related deaths in New York City's African-American and Latino communities. "African-Americans and Latinos have been disproportionately affected by the obesity...

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Proposed mission would return sample from asteroid 'time capsule'

Meet asteroid 1999 RQ36, a chunk of rock and dust about 1,900 feet in diameter that could tell us how the solar system was born, and perhaps, shed light on how life began. It also might hit us someday. "This asteroid is a time capsule from before the birth of our solar system," said Bill Cutlip of NASA's Goddard Space Flight Center in Greenbelt, Md., one of the leaders of Goddard's eff...

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Yellow fever strikes monkey populations in South America

A group of Argentine scientists, including health experts from the Wildlife Conservation Society, have announced that yellow fever is the culprit in a 2007-2008 die-off of howler monkeys in northeastern Argentina, a finding that underscores the importance of paying attention to the health of wildlife and how the health of people and wild nature are so closely linked. The paperappearing in...

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Researchers characterize stem cell function

The promise of stem cells lies in their unique ability to differentiate into a multitude of different types of cells. But in order to determine how to use stem cells for new therapeutics, scientists and engineers need to answer a fundamental question: if a stem cell changes to look like a certain type of cell, how do we know if it will behave like a certain type of cell? Researchers at Nor...

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Diabetes' link to eating disorders explored

Diabetics, under the gun to better manage their disease by controlling their food intake and weight, may find themselves in the sticky wicket of needing treatment that makes them hungry, researchers said. Attempts to maintain healthy blood sugar levels and prevent weight gain may suggest an eating disorder when the disease and its treatment are to blame, said Dr. Deborah Young-Hyman, ped...

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Human cells exhibit foraging behavior like amoebae and bacteria

When cells move about in the body, they follow a complex pattern similar to that which amoebae and bacteria use when searching for food, a team of Vanderbilt researchers have found. The discovery has a practical value for drug development: Incorporating this basic behavior into computer simulations of biological processes that involve cell migration, such as embryo development, bone remodeli...

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Penn researchers identify immune cells that fight parasites may promote allergies and asthma

PHILADELPHIA - Millions of people in both the developing and developed world may benefit from new immune-system research findings from the University of Pennsylvania School of Veterinary Medicine. The Penn Vet researchers, studying how the immune system operates, have discovered a previously unidentified cell population that may be the body's double-edged sword, fighting off parasitic infe...

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Boost ivory trade monitoring and enforcement before allowing one-off sales: UBC researcher

Recent petitions from several African nations to 'downlist' the conservation status of elephants should be denied because no adequate monitoring of the impact of ivory sales or enforcement of the ivory trade exists, according to recommendations published today by an international group of researchers including UBC zoologist Rene Beyers. In 2008, a one-off sale of stockpiled ivory from Sout...

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Scavenging energy waste to turn water into hydrogen fuel

MADISON Materials scientists at the University of Wisconsin-Madison have designed a way to harvest small amounts of waste energy and harness them to turn water into usable hydrogen fuel. The process is simple, efficient and recycles otherwise-wasted energy into a useable form. "This study provides a simple and cost-effective technology for direct water splitting that may generate hydr...

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ARS sends third seed shipment to Norway seed vault

This release is available in Spanish . A shipment of seed sent by the Agricultural Research Service (ARS) earlier this month to the Svalbard Global Seed Vault in Norway included a wild Russian strawberry that an expeditionary team braved bears and volcanoes to collect. The seed shipment--ARS' third since January 2008--included wild and cultivated soybeans, semi-dwarf wheat and rice...

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VAI researchers develop tool to help study prostate cancer

Grand Rapids, Mich. (March 11, 2010) Van Andel Research Institute (VARI) researchers have developed a new method to better study the cells that line and protect the prostate in relation to the development of cancer. Using the model, they found that normal cells and cancer cells depend on different factors to survive, which could aid in discovering how to target cancer cells without affecti...

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Why female moths are big and beautiful

In most animal species, males and females show obvious differences in body size. But how can this be, given that both sexes share the same genes governing their growth? University of Arizona entomologists studied this conundrum in moths and found clues that had been overlooked by previous efforts to explain this mystery of nature. Take a look around in the animal world and you will find...

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Behavior of single protein observed in unprecedented detail by Stanford chemists

For the first time, researchers have been able to confine and study an individual protein, one that plays a key role in photosynthesis, without having to pin it down so tightly as to alter its fundamental behavior. In the first practical application to proteins of a recently developed technique, two Stanford chemists were able to make detailed observations of the dynamic behavior of the mo...

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Insects and sex: 'Educational help' from the museum

So-called "holometabolous" insects will be in the focus of their attention. All insects that undergo complete metamorphosis from larva to pupa belong to this group of insects. "With more than 800,000 described species these insects are the 'successful ones' in evolution," underlines project manager Beutel. Besides many morphological similarities and agreements among the representatives o...

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Clean sampling from bioreactors

In its collective efforts to develop new drugs, the pharmaceuticals industry is making increasing use of biotechnology based on the application of natural biological transformation processes. One of the most important methods is the cultivation of microorganisms or cells in a bioreactor filled with a liquid culture medium. As drug manufacture is subject to especially strict regulations, the co...

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The scientific brain

Alink and colleagues based this conclusion on the characteristics of responses in the primary visual cortex. It is known that the primary visual cortex is critical for vision and that responses in this brain area create a map of what we are currently looking at. Alink and colleagues, however, for the first time show that images induce smaller responses in this area when they are predictable. T...

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