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Tag: "found" at biology news

Survival of the rarest: Fruit flies shed light on the evolution of behavior

... gene is of particular interest because it is also found in many organisms, including humans. The new study...wing larvae under a microscope. The researchers found that when the fruit fly larvae were competing for food, those that did best had a version of the for...

Baumann Lab defines proteins that distinguish chromosome ends from DNA double-strand breaks

...A at the ends of chromosomes. "Surprisingly, we found that neither long single-stranded overhangs nor t-loop formation is essential to prevent illegitimate repair of telomeric ends," said Dr. Bae. "Instead, a short tandem array of telomeric repeats bound by a Rap1/Trf2 complex is sufficient to impede no...

Toxoplasmosis infection trick revealed by scientists

...fore it invades host cells in the human body. They found that the protein known as TgMIC1 binds to certain sugars on the surface of the host cell, assisting the parasite to stick to, and then enter the human cell. Using a novel carbohydrate microarray the team were able to identify the precise sugars t...

Researchers publish first marsupial genome sequence

...n the May 10 issue of the journal Nature, the team found that most innovations leading to the human genome sequence lie not in protein-coding genes, but in areas that until recently were referred to as "junk" DNA. The effort to generate the high-quality genome sequence of the gray short-tailed, South Ame...

Study shows continued success for new HPV vaccine against virus responsible for cervical cancer

... 26 in 13 countries for nearly three years. They found a near 100 percent efficacy rate in prevention of HPV types 16 and 18. "It's the first vaccine designed specifically to prevent cancer," says Dr. Ault, one of the authors of the study and a key researcher in the development of the vaccine. "The ...

Tissue engineered scaffolding allows reproduction of cartilage tissue

...s extremely successful in tested mice as the study found these scaffolds to be a far more effective means of regenerating cartilage than traditional therapy. The shrinkage of cartilage that occurs frequently in other tissue engineering methods, and often renders the replacement tissue wrongly-sized for imp...

Study offers clues to 'Broken Heart Syndrome'

...ardiography within a few weeks. Heart function was found to be normal in 29 of 30. Dr. Regnante said that long-term follow-up will be critical to improved understanding of Takotsubo cardiomyopathy. In addition, he and his colleagues are gathering information on patients who have intravascular ultrasoun...

High-dose anticlotting drug cuts heart attack, death risk in half

...CAI), May 9?2, 2007, in Orlando, FL. Researchers found that giving patients at least 600 mg of clopidogrel before stenting, rather than the standard 300-mg dose, halved the risk of major complications associated with blood clotting, or thrombosis. In addition, the higher dose did not increase the risk of...

Magnetic computer sensors may help study biomolecules

... As described in a recent paper,* NIST researchers found that arrays of switches called "spin valves"—commonly used as magnetic sensors in the read heads of high-density disk drives—also show promise as tools for controlled trapping of single biomolecules. The arrays might be used in chip-scale, low-power ...

Hepatitis E takes a piggyback

...apanese farms at Hokkaido, Honshu and Kyushu. They found that by the age of 150 days, over 95% of pigs had ...n they reach the slaughterhouse. HEV, which is found worldwide, can potentially cause acute hepatitis in humans. So monitoring infection rates could help...

New host species for avian influenza identified

...goose and the common gull, and dabbling ducks were found to harbor all but two known influenza virus subtypes. The ecological and epidemiological data provided on influenza A virus should assist both in assessing the risk of the virus spread by wild birds and with the design of new surveillance studies ...

DOE JGI sets 'gold standard' for metagenomic data analysis

...ly, we applied the gold standard's 'the truth' and found there were tools that shouldn't have been used because their predictive accuracy was very low. But it also validated some of our assumptions." Mavrommatis said that, for example, when using the widely used sequence assembly tool Phrap, they actual...

DNA-damage test could aid drug development

...hose effects had been studied by Samson's lab, and found the results correlated well with results from the existing test. Additionally, he experimented with mutant mice created by Samson's lab that are deficient in certain DNA-repair systems. The bone marrow cells derived from these mice, and the cells cul...

100 percent of pregnant women have at least one kind of pesticide in their placenta

... babies and childbirth with exposure to pesticides found in the mothers?placenta. Among the aspects associated with a higher presence of pesticides we find an older age, higher body mass index, less weight gained during pregnancy, lower educational level, higher workplace exposure, first-time motherhood an...

Sleepless for science: Flies show link between sleep, immune system in Stanford study

...vity and 12 hours of low activity. The researchers found the sick flies had fewer sleep sessions and shorte...of two genes, called "timeless" and "period". They found that the loss of either gene's function made the flies more sensitive to bacterial infections and th...

Palau's coral reefs show differential habitat recovery following the 1998 bleaching event

... rate of coral recovery at 13 different sites, and found that recovery rates increased over time; notably, ... larvae to the damaged reefs. The researchers also found that recovery rates were significantly higher between 2002 and 2004 than between 2001-2002. ...

Female-led infanticide in wild chimpanzees

...researchers directly observed one infanticide, and found strong circumstantial evidence for two others. Evidence suggested that in two of the cases, the killings were perpetrated by groups of resident females against "stranger" females from outside the resident group. Infants were taken from the mothers, w...

Heavy multivitamin use may be linked to advanced prostate cancer

...d 1,476 with advanced cancers. The researchers found no association between multivitamin use and the risk of localized prostate cancer. But they did find an increased risk of advanced and fatal prostate cancer among men who used multivitamins more than seven times a week, compared with men who did not ...

Dinosaur hearing, listening to muscle noise, quieter cubicles

... in the Salt Lake Tabernacle. More details can be found later in the release (see "Salt Lake City Sounds" ... on transportation and hotel accommodations can be found at http://asa.aip.org/saltlakecity/saltlakecity.html . Please return the reply form if you are in...

Spud origin controversy solved

... 1840s. Using molecular markers, the scientists found that the Canary Island landraces possessed both Andean and Chilean types, as well as possible hybrids of the two. “In combination with other historical, molecular, agronomic, and crossing data, these findings support a hypothesis of multiple early...

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