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Tag: "many" at biology news

For many insects, winter survival is in the genes

...onths. "We certainly didn't expect to find that many proteins active during diapause," Denlinger said. ...id. He and his colleagues first figured out how many genes were turned on only during the flesh fly's dormant state. The researchers extracted and compar...

Mule deer moms rescue other fawns

...ime and energy and puts herself at risk by helping many other animals. In contrast, a whitetail mother wai...against predators year-round, while whitetails and many other species restrict aggressive defence to just the youngest fawns. Whitetails rely on flight rath...

Philandering female felines forgo fidelity

...nd the Zoological Society of London has found that many cheetah litters have more than one father. While ...ch consist of single or sibling males monopolizing many females. “It seems that female cheetahs are highly promiscuous with no detectable mate fidelity b...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

...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 phytoplankton is a global-scale pr...

Mice with a migraine show signs of brain damage

...spreading depression, which is thought to underlie many migraines. Even though the brain’s arteries exp...phasis on prevention. “It’s astounding just how many migraine sufferers do not see a doctor and are not on a medication to prevent a recurrence,?said Fri...

How to look at dinosaur tracks

...nd provide a guide for interpreting the effects of many different types of erosion on these invaluable imp...n the ground by the dinosaur. True tracks preserve many of the anatomical details of the foot, such as number of digits and impressions of claws. Howeve...

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

...someday shed light on the underlying mechanisms of many diseases that affect cell survival, such as muscul...s in the HDAC protein. They discovered that one of many proteins turned on and off by the CREB switch, a little-known enzyme called salt-inducible kinase-1,...

'Personality-gene' makes songbirds curious

...of such "personality genes" - there are simply too many factors that influence human behaviour and these factors are hard to control experimentally. Birds are an easier target for research and indeed, they also have different personalities. An international team of researchers have now found evidence fo...

'Insulator' helps silence genes in dormant herpes virus

...his means that the virus can take advantage of the many regulatory schemes that the host has worked out for its own chromatin and not have to reinvent the wheel by making its own proteins and unique structures," she says. The researchers now plan to study the HSV-1 insulator in mice to see how the mech...

pHLIP, a novel technology to locate and treat tumors

...for pHLIP. “Acidosis is a physiological marker of many diseases ?and pHLIP feels acidity,?said Reshetnyak...“We believe that universal medical tests to reveal many health problems at earlier stages may be developed based on pHLIP technology? “Our discovery is a...

Amphibians in losing race with environmental change

...since before the time of the dinosaurs and through many climatic regimes - the massive, worldwide decline... different climates, and continued to thrive while many other species went extinct. But right now, they just can't keep up." It has been estimated that t...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...nd increased storm activity, which are expected by many scientists to become worse as a result of global w...7 percent of the global land surface, they contain many of the earth’s species with numerous species restricted to single islands,?says Buckley. ?00 millio...

Why do oysters choose to live where they could be eaten?

There are many reasons why living in dense groups with others of your own kind is a good idea. Oftentimes, aggregations of a species serve as protection from predators and harsh environments or may be beneficial to future reproductive success. However, in the case ...

Climate change impacts stream life

...found. Rivers and streams are key ecosystems for many aquatic species and form important links with surrounding habitats, yet little emphasis has been given so far to the ecological effects of climate change on these running-waters. Now a twenty-five year study at Llyn Brianne in central Wales, led...

Master regulatory gene of epithelial stem cells identified

...is regeneration process not only for skin, but for many epithelial tissues including breast, prostate, and urogenital tract. This master regulator of epithelial stem cells turns out to be the p63 gene, a close relative to the well-known tumor-suppressing p53 gene. Without p63, mutant mice run out of the r...

Nitric oxide: Key to cardiovascular and pulmonary function and drug effectiveness

...e is a molecule produced by the body that controls many functions, including the contraction or dilation o... half of all drugs on the market today, as well as many hormone and neurotransmitters, target a specific family of cell surface receptors known as G-protein...

Maggots rid patients of MRSA

...MRSA. There is no reason this cannot be applied to many other areas of the body, except perhaps a large ab...mary, for ten years. More recently they found that many of their patients were suffering from MRSA-contaminated foot ulcers, with the rate doubling in a th...

First clinical trial of gene therapy for childhood blindness

...rds establishing gene therapy for the treatment of many different eye conditions." The trial’s first... the long term effect of the treatment. It will be many months before we have the full picture. We anticipate the best outcome in younger patients, as we wi...

Corals -- More complex than you?

The humble coral may possess as many genes ?and possibly even more ?than humans do. An... distant from humans in evolutionary terms, it has many of the immune system genes that protect people against disease. In fact, it is possible some of thes...

8 plants from South Africa may hold potential for treating high blood pressure

..., scientific analyses of the purported benefits of many plants is still scant. A team of researchers has now examined the effectiveness of 16 plants growing in the country's Kwa-Zulu Natal region and concluded that eight plant extracts may hold value for treating high blood pressure (hypertension). The...

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