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Tag: "alone" at biology news

Chickadees can help humans get their bearings

...erved in every species tested, even when landmarks alone could be used, suggesting that animals are predisposed to go by geometry," said co-author Dr. Chris Sturdy, a professor of psychology and member of the Centre for Neuroscience at the University of Alberta. The wild-caught chickadees differed from al...

Fat's fate depends on its source

...ats, according to the researchers. Old fat stores alone failed to set those critical metabolic pathways in motion, they found. The findings in mice suggest that normal metabolism requires so-called "new" fat--further evidence that a healthy diet should include an adequate source of fat. "De novo synthesi...

Ocean climate predicts elk population in Canadian Rockies

...artment of Biological Sciences. Cold, wet weather alone is enough to decrease an elk population, but when wolves are added to the environment, elk become especially vulnerable. Hebblewhite found that the combination of positive NPO values and wolf predation were related to 50 per cent declines in the elk ...

Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine

... Consequently, researchers have tried to use LcrV alone as a vaccine. Unfortunately, because it suppresses the immune system, immunization with this molecule may be harmful. Schneewind and colleagues, however, tested 11 truncated versions of LcrV, snipping out, from different locales, 30 of the protein's...

UCLA cancer researchers shake loose hidden biomarker

...ons are available, Rajasekaran said. "Chemotherapy alone doesn't do everything and immunotherapy alone might not do everything, but if could use both, we might have more success in treating patients, esp...

Health costs soar as 60 million Americans classed as obese

...s in three dimensions. Instead of manipulating DNA alone into such shapes, the researchers are using DNA to control the folding and resulting structure of RNA. Eventually, they envision building supramolecular machines whose inner workings are governed by twisted strands of DNA. In a paper that has been a...

UN successfully tests 'green' pesticide against locusts

...s in three dimensions. Instead of manipulating DNA alone into such shapes, the researchers are using DNA to control the folding and resulting structure of RNA. Eventually, they envision building supramolecular machines whose inner workings are governed by twisted strands of DNA. In a paper that has been a...

DNA constraints control structure of attached macromolecules

...s in three dimensions. Instead of manipulating DNA alone into such shapes, the researchers are using DNA to control the folding and resulting structure of RNA. Eventually, they envision building supramolecular machines whose inner workings are governed by twisted strands of DNA. In a paper that has been a...

A probe, not an echo

...e, all the blood vessel structures to be displayed alone and studied. "Preliminary results on a sheep kidney show exquisite anatomic and tissue detail," commented radiologist Ralls. ...

'EuroVacc 02' HIV Vaccine Trial Begins

...the sponsor, will evaluate the safety of DNA-HIV-C alone and of the prime-boost regimen of DNA-HIV-C+NYVAC-...genicity of the prime-boost regimen to NYVAC-HIV-C alone in healthy volunteers at low risk of acquiring HIV infection. The study will recruit 40 healthy volu...

UCLA study assesses cost-effectiveness of Hepatitis B drugs

... hepatitis B: 1) No treatment at all 2) Interferon alone 3) Lamivudine alone 4) Adefovir alone 5) Beginning therapy with lamivudine, but changing to adefovir if viral resistance...

NHGRI targets 12 more organisms for genome sequencing

...affecting about 20 million people in South America alone and killing 50,000 of them a year. Having the genome sequence of Rhodnius prolixus presents an opportunity for experts from the United States, Canada and Latin America to collaborate on understanding this widespread infectious disease. The pea aphid...

New tumor-suppressor gene discovered

...udies indicate that the disabling of this one gene alone can cause the growth of tumors. The researchers then did a number of experiments to study this line of flies with the clearly defective mats gene. "With transgenic techniques, we were able to introduce a normal mats gene into the chromosomes of flie...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...nd age 12, they get kicked out and start traveling alone or forming small bachelor herds." The search for a mate in this vast wilderness is further complicated by the elephant's reproductive biology. Females breed when they are in estrus--a brief period of ovulation that only occurs every two years and las...

Study reveals new technique for fingerprinting environmental samples

...or the first time that the signatures of the genes alone in terrestrial and aquatic samples can accurately diagnose the health of the sampled environments. This study, published in the April 22nd edition of the journal Science positions large-scale genome sequencing to accelerate advances in environmental ...

New Drugs For Bad Bugs: UF Approach Could Bolster Antibiotic Arsenal

... study a compound that later will be dropped ?that alone saves a lot of money.?/p> UF researchers say they will continue to apply the screening approach to other drugs in various situations and also will seek to develop better ways of determining how frequently and at what dose a drug should be given t...

Flocking together: Study shows how animal groups find their way

...r others, but not collide with them. This instinct alone caused individuals to form close-knit, evenly spaced groups like those of real animals, which pay a high price -- such as being eaten -- if they stray from their group. Second, a few animals were programmed to have a preferred direction, as if aware...

PET/MRI scans may help unravel mechanisms of prenatal drug damage

...ibuted among the body's organs), the PET technique alone did not provide adequate anatomical detail of the tiny fetal organs. The current study combined PET with high-resolution magnetic resonance imaging (MRI) to track cocaine pharmacokinetics down to the level of the placenta and individual regions of th...

Simple drug has the potential to save many lives threatened by malaria

...orial. Although a single trial of this size cannot alone be the basis for policy change, rectal artemisinins might be one safe and effective way to reduce the risk of children dying before reaching hospital. Providing effective antimalarial treatment close to home to reduce delay has the potential to save...

Estrogen-like Component of Plastic Stimulates Growth of Certain Prostate Cancer Cells

...tsmay fall into this category.In the United States alone this year, almost 220,000 men will bediagnosed with prostate cancer. The disease is the second most commontype of cancer found in American men, and approximately 29,000 men willdie from prostate cancer this year.Many cases of prostate cancer depend o...

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