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Tag: "adapts" at biology news

NIAID expands capability for influenza research and surveillance

...kers that may indicate how a virus becomes deadly, adapts and transmits infection; uncovering immune system mechanisms that protect against the H5N1 avian flu virus; and identifying the factors that make animals and people susceptible to flu virus infection. In addition, St. Jude will expand its animal surv...

Action video games sharpen vision 20 percent

...he human visual system to the limits and the brain adapts to it. That learning carries over into other activities and possibly everyday life." The improvement was seen both in the part of the visual field where video game players typically play, but also beyond—the part of your vision beyond the monitor. ...

How trees manage water in arid environments

... and intensity. "The semi-arid forest ecosystem adapts to the extremes in the annual cycle of water availability by its ability to remain turned on during the winter," Brown said. "Water stress, rather than temperature, is the primary control on the forest's behavior. The trees will remain significantly ...

When your brain talks, your muscles don't always listen

... Knight has always been interested in how the body adapts to exercise. When he entered college years ago, his goal was to become an elite track-and-field athlete. While he competed well, he realized that his dreams lay elsewhere, and his attention focused full force on academics. At the University of Con...

Studies yield insight into the numerical brain

...lso used the adaptation phenomenon, that the brain adapts to stimuli by reducing its initial activity--and that repeating the same quantity leads to reduced activation compared to changing the quantity. They asked subjects whose brains were being scanned using fMRI to view consecutive numbers presented on a...

St. Jude test of bird flu vaccine proves successful

...t an H5N1 "bird flu" virus that mutates so that it adapts to humans and can readily spread from person to person, Webby said. Flu experts and public health officials fear that such an H5N1 variant would trigger a human pandemic (worldwide epidemic). Webby is scheduled to present the findings of this study ...

Viral genetic differences are possible key to HIV dementia

...re mutations presents convincing evidence that HIV adapts to the local environment within the central nervous system and, moreover, that commonalities in this environment exist across individuals," he asserts. Another mutation in the V3 loop appeared consistently in virus from study subjects who demonstra...

What's shaped like a pear and has 2 genomes? Check the pond

...nome analysis showed that one way that Tetrahymena adapts to diverse environments via gene duplication, a process that allows organisms to diversify pre-existing genes and adapt them for new functions. In the case of Tetrahymena, duplications appear to be concentrated in genes involved in sensing and respo...

Secrets of the sea yield stronger artificial bone

...bone that is more bone than artificial, meaning it adapts to changing physiological conditions and meshes with surrounding tissue over time. In contrast, today's artificial joints are made from metal alloys and ceramics that often trigger inflammation and immune responses, or may require corrective surgery ...

Plant-derived vaccines safeguard against deadly plague

...e first to use Icon's viral expression system that adapts the tobacco mosaic virus (TMV) to produce a plant-based vaccine against plague. TMV, a common scourge of the plant world, causes widespread plant disease and can damage and mottle the leaves, flowers and fruits of whole crops. In the system, TMV is ...

Mice lacking social memory molecule take bullying in stride

...cade of activity triggered by BDNF as the organism adapts to experience. The researchers say the study "suggests new directions for antidepressant drug discovery." ...

Spousal illness can trigger partner death

...for several years. Eventually, the healthy partner adapts to the stress effect, so that the health risks of being a caregiver decline. However, the lack of social support that is associated with the illness or death of a partner becomes a problem, and health risks in the partner increase again. "Our work s...

Lactic acid not athlete's poison, but an energy source - if you know how to use it

...exercise generates big lactate loads, and the body adapts by building up mitochondria to clear lactic acid quickly. If you use it up, it doesn't accumulate." To move, muscles need energy in the form of ATP, adenosine triphosphate. Most people think glucose, a sugar, supplies this energy, but during intense...

Plant genes identified that can form basis for crops better adapted to environmental conditions

...xternal signals. This ensures that the root system adapts itself to changes in the soil − a very heterogeneous and changeable environment. From the agricultural point of view, the branching of the root is essential because roots are responsible for helping plants adapt to adverse environmental conditi...

ORNL, UC Berkeley unravel real-world clues to Earth's mysteries

...al aspects of how such a community grows, ages and adapts to its environment. ...

Brain May Be Less Plastic Than Hoped

...ther research has suggested that the visual cortex adapts somewhat immediately after injury. “And it is possible that, years after injury, the visual cortex could begin to reorganize,?he said. “Since there is similar organization across the neocortex of the brain, we could speculate that functional new con...

UF Researchers Map Bacterial Proteins That Cause Tooth Loss

... pathogen,?Lamont said. “Now we need to see how it adapts to various situations present in the mouth to cause disease.?/p>...

Studies reveal methods viruses use to sidestep immune system

...ion that allows us to fight off a virus, the virus adapts and comes up with a new function of its own to counteract our defenses." Further defining how RNA viruses target and control host immune defenses will aid in drug development to combat disease, he said. In the Virology paper, Dr. Gale and his resea...

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