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Tag: "choice" at biology news

Finding paves way for better treatment of autoimmune disease

... water, prefers alcohol. It's an apparently lethal choice for the signaling molecule that, in turn, also kills T cells that need phospholipase D to survive. Previously, it was unknown whether regulatory T cells required the molecule. "What we have found is that if you block this enzyme, almost all T cells...

Study supports 'urgent' need for worldwide ban on lead-based paint

...ethical thing to do, it's the fiscally responsible choice to prevent billions of dollars in future health costs and property clean-up costs." ...

Insect predation sheds light on food web recovery after the dinosaur extinction

...d to eat disappeared. Surviving insects faced the choice of shifting their food resource or dying. Many died, but in most places a few survived, and from these, some evolved to feed on new host plants. As the ecosystem rebuilt new links from its shattered state, the empty ecological space was open to ...

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

...te to parasite--making this set of proteins a poor choice for vaccine development, Tarleton said. The importance of the new research, however, isn't in specifically what happens in T. cruzi and Chagas Disease. Rather, it is a new understanding of how T cells react to infection in all parasitic diseases, ...

Some like it hot: Worms at deep-sea vents favor a fiery 45-55°C

... Celsius (113-131 degrees Fahrenheit) when given a choice of conditions, giving them the highest thermal preference of any animal studied to date. This unique preference for extreme temperatures may be the undersea worms' meal ticket, since they are apparently the only animals able to access -- and feast on...

For some young fish, early gene expression is a clear harbinger of fated lifestyle

...ividuals of many fish species face a developmental choice that will profoundly affect their future: whether ...rth on long open-water journeys. The developmental choice of the residential versus migratory "life history" is known to be influenced by environmental factor...

NHGRI announces new sequencing targets

... to monkeys, apes, and humans. NHGRI will base the choice of the eight mammals to be sequenced on the availability of high-quality DNA samples, the organisms' promise as biomedical models, and the presence of unique, innovative biological processes that may have contributed to the human genome over the cour...

Findings advance use of adult stem cells for replacement bone

... the process. In most cases, engineers have little choice but to take a trial-and-error approach to designing a growth-factor regime." In the study, Mikos's team hit upon the idea of having the stem cells create the proper growth medium themselves. The group, which included graduate student Quynh Pham and ...

Brain differences could explain why males and females experience pain relief differently

...ment of pain. Morphine is currently the drug of choice for treating several types of post-operative pain, and it is becoming increasingly clear that morphine alleviates pain to a greater degree in males in comparison to females. The results of the study by Murphy and Loyd provide important details about ...

Attractive birds more immune against bird flu

...uals of a species differ in appearance and why the choice of a mate is influenced by behaviour and appearance features that cannot reasonably be thought to have any usefulness. Therefore, they have begun to look more and more at the genetics behind what are called secondary sexual characters, such as the ta...

Behavioral studies show UV contributes to marsupial color vision

... using additive color mixture experiments in which choice between a colored light (training wavelength) and an additive mixture of two different colored lights (primary wavelengths) is based exclusively on differences in chromatic content. The results revealed that the fat-tailed dunnart possesses functiona...

When mice choose mates, experience counts

...t could also be seen as a female trusting the mate choice of another female." That one female's choice of mate could influence the choices of other females is well documented in birds and fish, but had n...

Attention shoppers: Researchers find neurons that encode the value of different goods

...'economic choice.'" Everyday examples of economic choice include choosing between working and earning more ...onomics." In general, it is believed that economic choice involves assigning values to available options. However, the underlying brain mechanisms are not wel...

Warbling whales speak a language all their own

...re of the songs. "Information theory was the right choice because it allows one to study the structure of humpback songs without knowing what they mean," said Suzuki. "I hope that knowing the hierarchical structure in humpback songs will inform research in other fields, such as evolutionary biology," said...

Plants, too, have ways to manage freeloaders

...sharer and good sharer, so as to give each plant a choice between two distinctly different strains. Povich, with assistance from UC Berkeley undergraduates Yla Tausczik and Mona Urbina, then planted lupine seeds collected from six different stands of yellow lupine on the reserve site. As the seeds sprouted...

Worms know bad food when they smell it

... to stick with the safer choice. In fact, when the choice was between E. coli and S. marcescens, they migrated towards the latter, despite the likelihood that this would result in a toxic infection. The worms that grew up exposed to a toxic variety of bacteria, however, showed a clear preference for E...

Brainstem blocks pain to protect key behaviors

...six to eight seconds and continued to eat. Food choice made no difference. Rats focused just as intently...making in the face of conflict -- in this case the choice between whether to feed or flee. Off cells help you feed instead of flee." Mason and Foo also fo...

Rutgers researchers scientifically link dancing ability to mate quality

...fspring, females tend to be more selective in mate choice and males therefore invest more in courtship display," Brown said. "Our results with human subjects correlate with that expectation. More symmetrical men put on a better show, and women notice." The researchers worked with a group of Jamaicans, buil...

Polymer gel can block toxic leakage problem in gene therapy

...to get through to the tumor. "Therefore, the only choice is to inject the viral particles directly into the tumor. But when you do that, we have demonstrated that dissemination elsewhere is inevitable. The result is that more will reach normal tissue than be left in the tumor. And that may cause all kinds ...

New study shows patients more willing to consider self-injectable HIV therapy than many physicians anticipate

...of the OpenMind study stated, "With the increasing choice of injectable biotech drugs including monoclonal antibodies, these findings potentially have far reaching implications across a whole range of therapeutic areas. We look forward to presenting the final results and exploring possible interventions at ...

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