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Tag: "played" at biology news

Prey not hard-wired to fear predators

...living without their traditional predators, Berger played recordings of wolves and tigers and chronicled their reactions. As expected, in the absence of predators, the elk, moose, bison and caribou did not show the kind of vigilance, clustering behavior and flight observed in the same species living with w...

Eavesdropping comes naturally to young song sparrows

...ber and their vocal interactions were recorded and played to a second young bird in a separate chamber. The next day, the second young bird was paired with a second tutor and the first young sparrow, now in a separate chamber by himself, overhead their interactions. The songs of all of the young sparrow...

Cytomegalovirus exacerbates atherosclerosis through an autoimmune mechanism

...aslini in Genova, Italy, confirms the pivotal role played by Cytomegalovirus infection in the pathogenesis of atherosclerosis. Atherosclerosis is the main cause of morbidity and mortality worldwide. Classic risk factors including smoking, diabetes, hypertension and high cholesterol levels are known to play...

Arctic ice retreating more quickly than computer models project

... and increase temperatures. This feedback loop has played a role in the increasingly rapid loss of ice in recent years, which accelerated to 9.1 percent per decade from 1979 to 2006 according to satellite observations. ...

Machine preservation may promote more organ sharing

...e organ." Stratta said machine preservation has played an important role in the Medical Center’s success transplanting kidneys at the outer limits of the ECD acceptance criteria, such as organs donated after cardiac death, preserved for more than 30 hours, or from donors over age 70. In previous studies ...

In Iran, cheetahs collared for the first time

...e brink of extinction. Historically cheetahs have played a significant role in Iranian culture, being trained by its emperors to hunt gazelles in ancient times. Iranian biologist and director of the project in Iran, Dr Hooshang Ziaie said "These captures herald a new era of conservation in Iran. This is ...

UCLA study uncovers clues for why Graves' disease attacks the eyes

...ttack in any immune response, we assumed that they played a key role in this antibody’s development." The team tested GD patients?blood for the antibody and compared their findings to samples from healthy people, with about 100 subjects in each group. The new antibody was found in almost all of the GD...

Rapid response was crucial to containing the 1918 flu pandemic

...at the timing of when control measures were lifted played a major part. Cities that relaxed their restrictions after the peak of the pandemic passed often saw the re-emergence of infection and had to reintroduce restrictions, says Neil Ferguson, D.Phil., of Imperial College, London, the senior author on the...

Male owls pitch their hoots to advertise body weight to competitors

...n by males from a range of body weights. They then played back these recordings to males with established territories, and observed and quantified their response (a combination of approaches and vocal responses). The results show that male owls respond more strongly to the high-pitched calls that simulate l...

Action video games sharpen vision 20 percent

...University of Rochester have shown that people who played action video games for a few hours a day over the ...tudent Shawn Green tested college students who had played few, if any, video games in the last year. "That alone was pretty tough," says Green. "Nearly everyb...

Scientists discover how body fights to control spread of cancer

... now scientists did not know whether this increase played any role in the spread of cancer. Our study indicates that galectin-3 may play a critical role and may have significant implications for future developments of drugs for the treatment of the disease." ...

Natural gut hormone offers hope for new obesity drug

...y Professor Bloom and his team identified the role played by gut hormones in appetite control. These hormones are released when a person eats, acting as neurotransmitters to indicate to the brain to stop eating. In particular, the researchers are interested in pancreatic polypeptide (PP), which they believe...

Surgeons with video game skill appear to perform better in simulated surgery skills course

...d from May through August, 2002, the surgeons also played three video games for 25 minutes while the researc...ht of their video game playing. "Surgeons who had played video games in the past for more than three hours per week made 37 percent fewer errors [in the Top ...

Lead with a poisonous electron shield

...t has been speculated that lead poisoning may have played a role in the fall of the Roman Empire: it is thought to have been caused by the concentration of grape juice in lead containers. Though the introduction of lead-free gasoline has reduced damage to the environment, the annual production of lead conti...

UCLA/Toronto researchers unlock key to memory storage in brain

...A Brain Research Institute. "We suspected it also played a key role in channeling memories to brain cells that are ready to store them." Silva and his colleagues used a mouse model to evaluate their hypothesis. They implanted CREB into a virus, which they introduced into some of the cells in the animal'...

Chimpanzees found to use tools to hunt mammalian prey

...upports a previous hypothesis that female hominids played a role in the evolution of the earliest tool technology and suggests that this technology may have included tools for hunting. ...

Satellites shed light on global warming

...ni illustrated the role satellite instruments have played in understanding these elusive waves. He pointed out that although they were theorised to have existed as far back as the 1930s, it was not until the advent of the satellite-borne radar altimeter that oceanographers were able to offer proof of their ...

Turning a cellular sentinel into a cancer killer

...r, little was known about whether p53 inactivation played a role in maintaining cancers. And researchers were not sure whether switching p53 back on in tumor cells would have any therapeutic effect. "It had been demonstrated that overexpressing p53 at very high levels could arrest or kill tumors, said Low...

Music genes and musical geniuses

...omparison with other animal species; from the role played by music in children's education, to the study of children to understand the musical mind. Why do infant prodigies exist? Why haven’t we all become one? Are there any types of music that are objectively better suited to be more appreciated than other...

Cancer cells forming blood vessels send their copper to the edge

...structures by using imaging resources." The APS played a key role in the research. The particular APS beamline Finney and her colleagues used employs specialized optics to focus coherent X-rays to sub-micrometer spot sizes, through which the sample is raster scanned (scanning from side to side, top to bo...

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