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Tag: "colleagues" at biology news

St. Jude study solves mystery of mammalian ears

...ifying the sound. In a previous study, Zuo and his colleagues showed that a protein called prestin is the motor in mammalian outer hair cells triggers this contraction. And that is where the debate begins. While both mammals and non-mammals have cilia on their outer hair cells, only mammalian outer hair cells ...

Common cancer gene sends death order to tiny killer

...t teamed up with Charlie Lowenstein, M.D., and his colleagues in Hopkins's department of medicine to put miR-34a into colon cancer cells. Doing this killed cells that contained p53, but fewer were killed in cells lacking p53, further suggesting that this microRNA gets its kill orders from p53. When researche...

Cellular message movement captured on video

...e have been able to show.” Chien, Hu, and their colleagues at UCSD had previously reported that paxillin can be rapidly assembled and disassembled, and they hypothesize that this process enables cell migration by assembling new focal adhesion sites in the direction of cell movement and disassembling them on ...

Math that powers spam filters used to understand how brain learns to move our muscles

...of biomedical engineering at Hopkins, who with his colleagues built the new model, says the artificial brain in the computer, like its natural counterpart, is guided in part by a special kind of statistical “probability” theory called Bayesian math. Unlike conventional statistical analysis, a Bayesian proba...

Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring

...newing spermatogonial stem cells. Yauk, along with colleagues at Health Canada and McMaster University, studied... by one of the study's co-authors. Yauk and her colleagues found that the rate of Ms6-hm mutations in the smoking mice were 1.4 times higher than that of non-s...

Discovery in orange cauliflower may lead to more nutritious crops

...tly isolated by Cornell plant geneticist Li Li and colleagues -- and described in the December issue of The Plant Cell -- allows the vegetable to hold more beta-carotene, which causes the orange color and is a precursor to the essential nutrient vitamin A. While cauliflower and many staple crops have the abilit...

Dirty snow may warm Arctic as much as greenhouse gases

.... Zender, graduate student Mark Flanner, and their colleagues calculated that dirty snow caused the Earth’s temperature to rise .1 to .15 degree, or up to 19 percent of the total warming. In the past two centuries, the Arctic has warmed about 1.6 degrees. Dirty snow caused .5 to 1.5 degrees of warming, or up...

Pesticides choke pathway for nature to produce nitrogen for crops

...ylogenomics and nuclear receptor genes. Fox and colleagues began detailing their findings in the journal Nature (2001) and Environmental Health Perspectives (2004), testing more than 50 chemicals, including pentachlorophenol (PCP), in in-vitro assays. The paper in PNAS reports their in-vivo findings using re...

New bacterium discovered -- related to cause of trench fever

...CSF infectious disease team, in collaboration with colleagues from other institutions, found that the new microbe is genetically similar to one spread by body lice in the trenches during World War I. That bacterium, called Bartonella quintana, caused a disease known as trench fever, and debilitated tens of thou...

Brain holds clues to bipolar disorder

...y. Using animal and cellular models, Dr. Manji and colleagues at NIMH showed that disruptions in these pathways resulted in many of the core symptoms of bipolar disorder and explained many other observations about the disease. The findings suggest a new avenue for treating the underlying cause of bipolar, rathe...

Dual-imaging technique useful before -- and during -- brain surgery

...ry. Neuroradiologist James Leach, MD, and his UC colleagues are among the first in the United States to combin...graphy images in the operating room, Leach and his colleagues use a high-tech surgical navigation system known as BrainLAB. The BrainLAB technology incorporates f...

Breakthrough developments in rheumatoid arthritis reported

...) meetings in San Diego, CA, Dr. Gregersen and his colleagues will be presenting the lab’s latest genetic findin...oints. Over the last decade, Dr. Gregersen and his colleagues have been amassing a genetic database complete with siblings with rheumatoid arthritis (and some fam...

Undergraduate research shows leaderless honeybee organizing

...he queen’s individual decision. What Pierce and colleagues found was that older workers gave signals to the queen and to the rest of the colony that it was time to swarm and leave the hive. Later, they were able to observe inside the swarm itself and see workers give the queen a signal, known as “piping” tha...

Newly discovered antibody may be body's natural defense against Alzheimer's

...antibodies bind with oligomers, Dr. Relkin and his colleagues collaborated with Drs. Charles Glabe and Rakez Kayed from the University of California at Irvine, who had previously created anti-oligomer antibodies in rabbits. Using techniques pioneered by Dr. Glabe's group, the NewYork-Presbyterian/Weill Cornell ...

Massive herds of animals found to still exist in Southern Sudan

...ckets of wildlife had been sighted. Marjan and his colleagues from the Wildlife Conservation Society and members... find nothing in terms of wildlife.” Fay and his colleagues decided to return to Southern Sudan to conduct new surveys as part of a 2004 Wildlife Conservation S...

Researchers reveal structure of protein altered in autism

..., and leisure or play activities. Comoletti and colleagues studied the neuroligin family of proteins that are...n yield valuable medical insights.” Taylor and colleagues have been studying the structure and function of acetylcholinesterase – a structurally related prote...

Genetic factors are linked to fever following smallpox vaccination

...thors of the study, Samuel L. Stanley Jr., MD, and colleagues at Washington University, St. Louis University, and The Emmes Corporation, hypothesized that people who develop fever after vaccination may have genetically determined differences in their immune responses compared to those who do not. They studied 3...

Small, self-controlled planes combine plant pathology and engineering

... at Virginia Tech’s Kentland Farm, Schmale and his colleagues collected more than 500 viable colonies of Fusarium, representing at least a dozen species. “For 11 of these Fusarium species, this is the first report of their ability to be transported great distances above the surface of the earth,” Schmale sai...

Study finds mix of disease processes at work in brains of most people with dementia

...ical Center in Chicago. Julie Schneider, M.D., and colleagues report the findings in the journal Neurology online today. Among their findings is the observation that the combination of Alzheimer’s disease and cerebral infarcts (strokes) is the most common mix of pathologies in the brains of people with dementi...

Plastic that grows on trees

...g, lead author and former post doc Haibo Zhao, and colleagues John Holladay and Heather Brown, all from PNNL, were able to coax HMF yields upward of 70 percent from glucose and nearly 90 percent from fructose while leaving only traces of acid impurities. To achieve this, they experimented with a novel non-acidi...

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Breaking Biology News(10 mins):Global Wearable Technologies Market and Applications, Opportunities, Industry Analysis, Segmentation, Size, Growth, Share, Overview, Trends and Forecast 2014-2020 2The Global Watermarking and Fingerprinting Markets 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3
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