system 2 5

Tag: "system" at biology news

A new portable biosensor detects traces of contaminants in food more quickly and cheaply

...ants, while having a very similar sensitivity. The system has been tested successfully to detect pesticides ... sample is very similar to that used by the immune system to identify a virus or bacteria in the body. The organism attacks an infection by generating antibod...

Hives ferment a yeasty brew, attract beetle pest

... commercial hives. "If we can find out how this system works, there is a good possibility we will figure out ways to protect against the beetle," says Tumlinson. Honeybees in the U.S. and Europe have been suffering from a variety of invaders and ailments including varroa mite infestations, fungal infe...

Left-right wiring determined by neural communication in the embryonic worm

..., the researchers show that embryonic worms have a system of gap junctions -- "broadband" communication chan...e left and right to communicate with each other, a system that dissolves as the worm develops. Every neuron in the adult C. elegans has been mapped and nam...

Executable biology -- Computer science sheds light on animal development

...e used to get a global, dynamic picture of how the system responds to a variation ?such as a drug or a genetic mutation. Preliminary studies could be quickly done using the model, saving valuable laboratory time and resources for only the most promising research avenues. We call this Executable Biology."...

Intelligent materials to regenerate bone tissue

...active, capable of acting on the tissue-generating system and its corresponding genes, as well as respond appropriately to the physiological and biological changes, both internal and external, of that system. Also necessary are size and shape characteristics, as well as mechanical functions appropriat...

Fast and slow -- How the spinal cord controls the speed of movement

...ased by brain cells may contribute to activating a system of nerves and muscles that allow for faster movement. They suspect that damage to these brain cells may disrupt the release of dopamine, further complicating free movement. Fetcho and his group are building a transgenic line of fish with those brain ...

Biodegradable microspheres deliver time release vaccines, stimulate different immune response

A new vaccine delivery system using microspheres of a biodegradable polymer may ...ter vaccinations, by developing a vaccine delivery system that released the vaccine into the system slowly over time. They chose a biodegradable polymer, cal...

Proteasome activator enhances survival of Huntington's disease neuronal model cells

...n build up in the cell is the ubiquitin proteasome system (UPS). In Huntington's disease (HD) brains and ot...er CAG repeats can reduce the ubiquitin proteasome system (UPS) function in Huntington¡¦s disease cells. Following compromise of the UPS, the overexpression o...

UCLA study uncovers clues for why Graves' disease attacks the eyes

.... "Because T-cells are the generals of the immune system and lead the attack in any immune response, we assumed that they played a key role in this antibody’s development." The team tested GD patients?blood for the antibody and compared their findings to samples from healthy people, with about 100 sub...

NIAID expands capability for influenza research and surveillance

... the virus causes disease and how the human immune system responds to infection with the virus. The goal of ... adapts and transmits infection; uncovering immune system mechanisms that protect against the H5N1 avian flu virus; and identifying the factors that make anim...

Fish extinctions alter critical nutrients in water, study shows

...de a means to assess patterns of species loss in a system in which we just cannot do complex experiments," said co-author Alex Flecker, Cornell associate professor of ecology and evolutionary biology, who served as McIntyre's adviser. "But we have to be aware that there is a whole set of assumptions that go...

Leeches ferry infection among newts

...stop breeding, apparently to shore up their immune system to fight off the disease. But that comes at the cost of having fewer offspring," he adds. Findings from the study may also indicate that human activities could lead to increases in the infection, since these leeches are most abundant in wetlands w...

Rare cell prevents rampant brain activity

...ore common than their inhibitory counterparts, the system is generally kept in a state of equilibrium. Just how the brain manages this feat is a puzzle to scientists. Scientists at Karolinska Institutet and the Brain Mind Institute in Switzerland have now discovered a mechanism that might explain how th...

Flies don't buzz about aimlessly!

... purpose? Armed with a computer video tracking system and an array of mathematical techniques the two researchers have revealed how the flight patterns of starved fruit flies constitute an optimal scale-free searching strategy ?like the fractal patterns of a snowflake, a fly flight path appears similar ...

Bones in motion: Brown scientists to create new 3-D X-ray system

...ither. This high-resolution, high-speed imaging system will contribute to better treatments for knee, sho...ry important from a biomedical standpoint." The system will be designed and built with a $1.8-million grant from the W.M. Keck Foundation, one of the natio...

Researchers develop marker that identifies energy-producing centers in nerve cells

...ed. Dr. Chandrasekaran says the fluorescent marker system may make it possible to explore how neuronal activity and the mitochondrial energy-producing system are coordinated and how the interrelationship works. The researchers say the establishment of th...

NIH researchers discover protein that appears to regulate bone mass loss, the cause of osteoporosis

...d is caused by a deficiency in an important immune system protein known as CD40 ligand. This protein is crucial for the development and maturation of immune cells, and without it people with X-linked Hyper IgM Syndrome are susceptible to a range of opportunistic infections. Last year, an NIAID doctor treati...

Sandia researchers take new approach to studying how cells respond to pathogens

... the needed life span, and are accepted as a model system by the immunology research community. "We're st...ys the end goal is to make a benchtop miniaturized system expected in about two years. It would be placed in Biosafety Level 3 or 4 labs to study immune respo...

2 brains -- 1 thought

...ific research is to investigate the structure of a system in order to then draw conclusions about its function. Memmesheimer and Timme now took the reverse perspective. "For some simple networks we know the activity dynamics, that is, their function, but not their exact structure," explains Memmesheimer. "A...

Out-of-body experiences may be caused by arousal system disturbances in brain

...em far-fetched to some, but for those with arousal system disturbances in their brains, it may not be a far ...dy and existed outside it." Because the arousal system controls or influences sleep-wake states, alertness and attention, Nelson and the research team ques...

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