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Tag: "such" at biology news

Philandering female felines forgo fidelity

...ensities, due to competition from larger predators such as the lion and hyena. “Our study shows that more fathers are contributing to the next generation than we thought,” added Durant. “This is good news for cheetahs, and a reminder that future conservation strategies need to encompass large landscapes i...

Lessons from the orangutans: Upright walking may have begun in the trees

...in woodland environments, while even earlier forms such as Millennium Man ( Orrorin ) appear to have lived in the forest canopy and moved on two legs. "Our findings blur the picture even further," said Robin Crompton of the University of Liverpool in Liverpool, Great Britain, who is one of the study's ...

Moths mimic sounds to survive

...anecdotal observations have suggested that animals such as snakes, owls and bees use acoustic mimicry. This study takes the next step and provides the definitive experimental evidence for how mimicking sounds helps an animal survive....

Human stem cell treatment restores motor function in paralyzed rats

...tween spinal cord ischemia and spinal cord trauma, such as might occur in a diving or car accident, is that in the ischemia model, no mechanical damage has occurred to the spinal cord,” said Marsala. “The spinal cord and brain motor centers are still partially connected, but there has been a selective lo...

Pistachios lower cholesterol, provide antioxidants

...hios as a snack and by incorporating the rest into such foods as pistachio muffins, granola and pistachio pesto. "We had really good compliance and participants were generally pleased with the diets," says Gebauer. Standard blood tests determined the various cholesterol levels in the participant’s ...

Resistant HIV quickly hides in infants' cells

...till a problem, and much is unknown concerning how such transmission affects the responses of infants to various drug treatments. The study, conducted by Deborah Persaud, MD, of Johns Hopkins University School of Medicine and colleagues working throughout the United States, analyzed HIV-infected infa...

Early exposure to indoor fungus molecules may protect infants against future allergies

Maybe being a fussy housekeeper isn’t such a good thing after all. Environmental health sci...fancy may be associated with respiratory symptoms, such as persistent coughing and wheezing." The UC-led team analyzed the effects of microbial exposures...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

...ontaining enzymes as one of the tricks to maintain such tiny cells. There are many mechanisms that can account for species formation in photosynthetic phytoplankton, and this is just one of the major pieces to this long-standing puzzle for biologists." "Assimilation of atmospheric CO2 by marine phytop...

Mice with a migraine show signs of brain damage

...hen blood flow to the brain is completely stopped, such as during a heart attack. “In mice, the damage ...omen’s Health Initiative, for instance, found that such women had a 50 to 70 percent higher risk of stroke compared to other women. And a study led by Miche...

Catching cancer's spread by watching hemoglobin

...ient and powerful for helping to diagnose diseases such as melanoma, the deadliest form of skin cancer. The technique can image blood vessels up to a millimeter below the surface. Looking at blood vessels just below skin growths would be very useful for distinguishing between malignant and benign skin tum...

How to look at dinosaur tracks

...eserve many of the anatomical details of the foot, such as number of digits and impressions of claws. However, the true tracks may be filled with sediment or the original tracked surface may have eroded away. In the latter case, erosion may expose prominent layers of concentric circles extending from ...

Salk scientists hammer out a pathway that promotes muscle cell survival in mice

...anisms of many diseases that affect cell survival, such as muscular dystrophy, neurodegenerative diseases,...athway works in muscle under different conditions, such as during exercise, as well as what part it plays in maintaining cell survival in other tissue types...

A cherry on top: Tart cherries may alter heart/diabetes factors

...art cherries conferred these beneficial effects at such a modest daily intake." The potential for protective effects from antioxidant-rich foods and food extracts is a promising area of research, says Bolling, who is the Gayle Halperin Kahn Professor of Integrative Medicine, a professor of cardiac surg...

Machine preservation may promote more organ sharing

... years or those over age 50 with health conditions such as high blood pressure, stroke or elevated levels ...t 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....

'Personality-gene' makes songbirds curious

...er you are an anxious type, or a fearless person - such individual differences in personality could be par...y. In humans, it is hard to prove the existence of such "personality genes" - there are simply too many factors that influence human behaviour and these fac...

'Insulator' helps silence genes in dormant herpes virus

...lock the communication of gene-activating elements such as enhancers and promoters. The group is also working to identify any additional proteins that may play a role in establishing the insulator. Knowing what genes the virus uses to hide and re-emerge could give pharmaceutical companies targets for d...

How the brain's backup system compensates for stroke

...pheres, and the left-hemisphere PMd is dominant in such motor control function. Researchers had known that after a stroke damages one side of the brain and paralyzes a limb, the PMd in the intact hemisphere increases in activity. However, they did not know whether this activity increase represented specif...

Amphibians in losing race with environmental change

...rvasive on amphibians than many other vertebrates, such as birds or mammals. "Historically, amphibians were adept at evolving to deal with new conditions," Blaustein said. "What they are doing is showing us just how rapid and unprecedented are the environmental changes under way. Many other species wil...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

... use to defend themselves from attack. Although such so-called gene-for-gene interactions are thought to be common in diseases, very few examples of a single gene in a pathogen targeting a single gene in an animal or human host have been identified so far. Photorhabdus is a family of bacteria that i...

US control strategies may make flu epidemics worse, UCLA study shows

...than the seasonal flu is an outright flu pandemic, such as a human strain of avian flu. And officials say it is not a question of if such a health crisis will come but when. Are we prepared? In a word, say three UCLA researchers, no. I...

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