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Tag: "choice" at biology news

Center releases new public survey on stem cells

...onic stem cell research. Respondents were given a choice of four ESC research policy options: banning all embryonic stem cell research, retaining the current Bush administration policy, relaxing restrictions along the lines of some Congressional proposals that would allow federal funding of research using...

Chernobyl: The true scale of the accident

...re compensated for losses, given free houses and a choice of resettlement location, the experience was traumatic and left many with no employment and a belief that they have no place in society. Surveys show that those who remained or returned to their homes coped better with the aftermath than those who we...

Picky female frogs drive evolution of new species in less than 8,000 years

...should create evolutionary pressure for the female choice to evolve so that they pick the right males," Mori...rence, Hoskin and colleagues concluded that female choice led to this new species. Interestingly, evolutionary theory would predict that the southern and nor...

'Patient-choice' C-section rate rises 36%: HealthGrades study

...leased an opinion supporting C-sections by patient choice "�so long as the patient is fully informed of the risks and benefits of this procedure over vaginal delivery." ...

Locusts' built-in 'surface analysis' ability directs them to fly overland

...When the locusts are presented with a situation of choice between surfaces reflecting either polarized or diffused light, they exercise their preference to fly over the (dry land) area of diffused light," said Dr. Shashar. This is a survival instinct, since if they flew over a body of water, the locusts wou...

Monkeys understand numbers across senses

...he calls. At the same time they gave the monkeys a choice to look at video images of either two or three monkeys. The researchers found that the monkeys overwhelmingly chose to look at video images that matched the number of monkeys they were hearing. This result is consistent with previous studies that bot...

Flies on speed offer insight into the roles of dopamine in sleep and arousal

Methamphetamine, the drug of choice for long-distance truckers and college students pulling all-nighters, appears to do a similar trick for fruit flies, too. This finding is one of several in a new study that demonstrates a critical role for the neurotransmitter dopamine in the modulat...

Modification of program enables prediction of gene transcription

...oth coding and non-coding DNA. "Like any multiple choice question, if you can learn something about one of ...ble to convert a blind guessing game to a multiple choice question ?is it a UTR exon or a protein-coding exon? These kinds of questions are easier to answer n...

Drug resistance testing in treatment-naive HIV patients is cost-effective

...nt is started--can effectively guide a physician's choice of treatment regimen and increase a patient's quality-adjusted life expectancy. (Quality-adjusted measurements of time reflect that survival with an illness is presumed to be of lower quality than healthy survival.) "For the approximately 90 percen...

Gambling monkeys give insight into neural machinery of risk

...deciding what's valuable and for actually making a choice based on that valuation," said Platt. "We think that this is just part of a whole circuit that's involved in that process." However, he said, pinpointing a key region involved in risk assessment will enable further studies to map that circuitry. "It...

Nicotine triggers the same brain reward circuitry as opiates

...tine. However, naloxone did not block the chamber choice of mice conditioned with cocaine, found the researchers, indicating that cocaine activates the brain reward pathway in a different way from nicotine and opiates. "The present results demonstrate that nicotine-associated environmental stimuli can act...

Hepatitis C responds best to combo of ribavirin and interferon, study concludes

...f interferon should be considered the treatment of choice for patients with hepatitis C," conclude Jesper Brok, M.D., and colleagues at Copenhagen University Hospital. However, the authors caution that only one in four patients treated with the combination therapy actually had a sustained response. The re...

Sandia completes depleted uranium study

..., and other properties of DU make it an attractive choice as an anti-tank weapon. However, on impact, DU particulate is dispersed in the surrounding air both within and outside the targeted vehicle and suspended particulate may be inhaled or ingested. Concerns have been raised that exposure to uranium parti...

Bumblebees copy one another when contending with unfamiliar flowers

... new study, the researchers offered bumblebees the choice between several artificial-flower clusters in a laboratory setting. The bees preferred to feed from clusters where another bee was already collecting nectar, rather than making their own independent choices. Most interestingly, the bees only copied e...

Tufts researchers shine light on firefly mysteries

...s lying in order to find romance? "If female mate choice is adaptive, we would expect that the more attractive males would provide females with greater material benefits and/or genetic benefits," said Sara Lewis, associate professor of biology in the School of Arts & Sciences. "On the other hand, sexua...

Scientists discover the body's marijuana-like compounds are crucial for stress-induced pain relief

...ed by UC-Irvine, that could become the new drug of choice for those suffering from pain or stress conditions. Importantly, it would not require people to smoke marijuana to obtain relief or wrestle with the legal issues surrounding the drug. Others from UGA involved in the study include faculty members Phi...

IMF Launches World’s First DNA Database for Myeloma Patients

...: he has shown that female mosquitofish make their choice before mating, and overwhelmingly that choice is made with size being the prize. Langerhans and colleagues collected about 350 males of Gambusia ...

Certain fish have a special mating preference

...: he has shown that female mosquitofish make their choice before mating, and overwhelmingly that choice is made with size being the prize. Langerhans and colleagues collected about 350 males of Gambusia ...

Researchers reveal secrets of flying snakes

...down and into the prey. Whether or not the snake's choice of prey is related to its gliding ability is unknown. ...

Fox Chase study shows that weakened T-cell receptor signals change T-cell lineage

... lineage or another. The first, most basic career choice made by precursors of the adaptive arm of the immune system is whether to adopt the B-cell or T-cell fate. Both originate from stem cells in the bone marrow, but B cells mature there while T cells migrate to the thymus gland, which governs their deve...

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