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Tag: "react" at biology news

Is the brain wired for faces?

...nd his team to predict how different neurons would react during the recognition of non-face objects. They then showed that this simple model, even though not developed for face recognition, could quantitatively account for the inversion effect and make predictions about how selective the group of "face neu...

Discovery may speed forest biotechnology

...could also provide information about how trees may react and adapt to climate change, or perhaps identify tree populations based on their DNA that are most at risk. Such populations might benefit from accelerated breeding or transplantation to aid their survival. This would give ecologists and conservation...

New pathways for autoimmune treatment identified

...press most body proteins so any T cells that would react to them can be eliminated through negative selection, he says. "But Aire's role in protein expression is not sufficient to explain all the clinical symptoms of patients with APS1," Dr. Mi says. "The Aire gene must have other immune functions." i NK...

Revolution in the fight against cancer & viruses

...allow both the development of siRNA-based drugs to react differently for different diseases. "By 'tweaking' the structure of siRNA to target specific diseases, we can dictate whether we want a particular siRNA-based drug to block or promote an immune response, to increase the effectiveness of the treatmen...

Researchers add crucial information on how the body's T cells react to parasitic diseases

.... Rather, it is a new understanding of how T cells react to infection in all parasitic diseases, including malaria, which may cause as many as 500 million infections and three million deaths annually in humans. The entire area has been little understood because of the almost impenetrable complexity of the ...

Many cleaners, air fresheners may pose health risks when used indoors

...oxic, some recent studies have shown that they may react with ozone to produce a number of toxic compounds. (The primary constituent of smog, ozone enters the indoor environment from infiltration of outdoor air, but is also produced indoors by some office machines such as copiers or printers, and by some d...

How plants avoid feeling the burn

...nt problem is that carotenoids are highly prone to react with water and oxygen, so all measurements had to be performed in an environment that would both protect the molecule and immerse it in an environment mimicking a biological cell membrane, where the carotenoids are found in nature. Other innovation...

Viagra improves high altitude exercise performance up to 45% for some

...t step is to do a study with women, to see if they react the same way to sildenafil and altitude. The researchers also want to take a closer look at sildenafil responders to see if they can identify ahead of time who will benefit from treatment. In addition, a question still outstanding is whether non-resp...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

...ures, says Brinker. During spin-coating, the cells react to the increasing concentrations of materials in the developing silica nanostructure by expelling water and developing a gradient in the local pH. This in turn influences lipid organization and the form of the silica nanostructure, reduces stress, an...

Novel therapy combinations gain ground in treating hepatitis

...ult, researchers are finding that the diseases may react more successfully to a longer duration of therapy. In this study, researchers at the University of Tuebingen in Germany compared two combination therapies for an extended treatment period of 72 weeks, compared to the current standard of 48 weeks, in...

UCI scientists find chlorine may contribute to ozone formation

...owers and municipal water supplies. Chlorine atoms react rapidly with hydrocarbons and nitrogen oxides from automobile and power plant emissions, contributing to the complex chain of reactions that leads to ozone formation. The primary cause of urban ozone is the reaction of hydroxyl radical (OH) with hydr...

Researchers unveil strategy for creating actively-programmed anti-cancer molecules

...lled programming agents or adapters-to selectively react in the antibody binding sites without compromising the targeting property of the adapters," notes Sinha. The results showed those mice treated with the new compound developed significantly fewer metastases than those treated with other similar comp...

Smell of success for nanobiosensors

...s. "Our tests showed that the nanobiosensors will react to a few molecules of odorant with a very high deg...detect almost any smell because different proteins react to different odorants and it is the resultant combination of reactions that identifies a certain sme...

Robots manipulating animal behaviour

...t with some animals, such as bees. But they cannot react to the animals' response," he says. "In our projec... insbots call on specially developed algorithms to react to signals and responses from individual insects. This results in a chain action or reaction between...

Tastes great! Study shows brain's response to pleasing -- and changing -- tastes

...level information processing in the brain helps us react to what we like or don't like," he says. "These neurons respond to a taste as pleasurable, or as not pleasurable." But research on how these neurons fire to signal pleasure is important for more than just curiosity's sake, he adds. The ventral pal...

Finding the right mix: A biomaterial blend library

...on of a respective material, the cells around them react by changing shape, ultimately increasing or decreasing contact with the films. In the body, such cell-material dynamics are critically important to the outcome--determining whether a biomaterial leads to inflammation or abnormal cell growth, for exam...

Biotech cotton provides same yield with fewer pesticides

...we do agriculture. It depends on how the producers react to the technology." He added, "It's a problem that is ecologically complex. We cannot say, 'Because it's good in Arizona that it will necessarily be good somewhere else.' We need to study many systems carefully before we can generalize." ...

Scientists find a key to immune system's ability to remember

...everywhere in the body, enabling them to sense and react more quickly when an infectious agent is reencountered. "Now we know one of the reasons we get such a quick response and clearance (of the pathogen) with reinfection," Suresh explains. "If you increase the size of your army, you can clear your en...

Changing length of days reverses how estrogen affects aggressiveness in mice

...ce are exposed to can change how aggressively they react to other mice. The study found that in the short days of winter, the class of hormones called estrogens acts to increase aggression in males of a particular type of mouse called the Oldfield Mouse (Peromyscus polionotus). However, in the long da...

Adolescent but not adult hamsters are more aggressive on low dose of fluoxetine

... maturing and, says Taravosh-Lahn, "could possibly react to drugs given to adults in different and potentially negative ways. We need to understand how these drugs will affect the developing nervous system before giving them to children." The neuroscientists explain that because adolescents may have lo...

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