shows 2 7

Tag: "shows" at biology news

Scientists find microRNAs regulate plant development

...time sequence. Research reported in The Plant Cell shows that microRNAs control the accumulation of transcr...uence that is complementary to microRNAs, and thus shows potential for microRNA-mediated regulation. In experiments analogous to those of Bartel's group, Chu...

Neandertal femur suggests competition with hyenas and a shift in landscape use

...emur bone from a Middle Paleolithic Neandertal. It shows in the shape of the femur that a shift to greater ...ur was gnawed by carnivores, probably hyenas. This shows that close competition for food and space persisted through the Middle Paleolithic among these Neand...

Exercise training in ordinary people affects the activity of 500 genes

... new study from Karolinska Institutet in Stockholm shows that hundreds of genes in the thigh muscle are activated in regular cycle training. The study also reveals that great differences in training response may be due to the ability in some people to activate their genes much more forcefully. The study is...

Researchers feed tiny pills of RNA to planarians to identify genes essential for regeneration

...sor of neurobiology and anatomy. The U team's work shows that planarian genes can be selectively manipulated to study some of the most basic and important areas of biological research: stem cells, homeostasis (tissue loss and replacement), regeneration, and disease. "Planarian biology has much in common t...

Multi-species genome comparison sheds new light on evolutionary processes, cancer mutations

...gements occurred at random locations. "This study shows the tremendous power of using multi-species genome comparisons to understand evolutionary processes, including those with potential relevance to human disease," said NHGRI Scientific Director Eric D. Green, M.D., Ph.D. "The dog genome map generated b...

Men Estimate Men's Risks Of Common Disorders Higher Than Women Do, And Vice Versa

...ir own sex than for the opposite sex. But, it also shows that males think that men are fitter and females think women are more athletic. Professor Sally Macintyre in the MRC Social and Public Health Sciences Unit at the University of Glasgow analysed responses from 466 women and 353 men, aged 25, 45, and ...

Plankton can run, but can't hide from basking sharks

...among plankton-eating sharks, the authors say, and shows that shark diving behaviour differs predictably be... arrow worms) off their trail. However, this study shows that basking sharks seem to have rumbled them. As well as shedding new light on behavioural strateg...

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

...ffected coral reefs in the Caribbean." The report shows infant mortality in drylands in developing countries averages about 54 children per 1,000 live births, 10 times that of industrial countries. Importantly, the rate in such drylands is twice as high as that of other, non-dryland regions in developing ...

Missing Receptor Molecule Causes Tumor Growth

...merican science journal Molecular Cancer Research, shows that these cells lack a receptor molecule called DR4. DR4 is responsible for receiving the signal molecule TRAIL, which initiates apoptosis in these cells. Prof. Krainer explains: "To begin with it was not evident what was missing in the signal tran...

Nanoparticles carry cancer-killing drugs into tumor cells

...merican science journal Molecular Cancer Research, shows that these cells lack a receptor molecule called DR4. DR4 is responsible for receiving the signal molecule TRAIL, which initiates apoptosis in these cells. Prof. Krainer explains: "To begin with it was not evident what was missing in the signal tran...

Looks matter to female barn swallows

...cks than they had in their first nests. "The study shows that the females are paying close attention to these signals and that they respond quickly to changes in their mate's appearance," said Safran. The reddish breast and belly feathers indicate a male's quality, such as his health, status or ability t...

Oxygen increase caused mammals to triumph, researchers say

... of oxygen concentration in the earth's atmosphere shows that a sharp rise in oxygen about 50 million years ago gave mammals the evolutionary boost they needed to dominate the planet, according to Paul Falkowski, Rutgers professor of marine science and lead author of a paper published Sept. 30 in the jour...

Scientists show that tick-borne flaviviruses use a novel mechanism to evade host defenses

... the same vaccines and therapies, but the RML work shows otherwise. "NS5 prevents interferon from doing its sentry job and allows the virus to take over cells," says Dr. Bloom. "This is the first definitive study that dissects where the failure occurs in the signaling pathway, and then identifies some of ...

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

...ist familiar with the study commented: "This study shows that long term training has a lot bigger effects than we thought. They followed Armstrong ?a well-known hard trainer ?and the changes in his efficiency over seven years are really quite amazing. We wouldn't be surprised if some major physiological ch...

New technique rapidly detects illness-causing bacteria

...osensor works in a test tube and a positive result shows up as a red line on a strip, much like a pregnancy test. Newly designed software gives researchers a powerful tool for increasing the sensitivity of the analysis. The method may help researchers and companies that are in the business of tracking foo...

Cultural norms not unique to human societies

...hoosing the group norm over the alternative method shows a level of conformity we usually associate only with our own species," said Dr. Horner. "By using the group's technique rather than the alternative method, we see the conformity is based more on a social bond with other group members than the simple ...

Beyond genes: Lipid helps cell wall protein fold into proper shape

...ular Biology William Dowhan, Ph.D., and colleagues shows that phospholipids, which make up the permeable barrier of cell membranes, play a direct role in the folding of membrane proteins ?proteins that penetrate the membrane or bind to either side of it. "What we've demonstrated again is that it's not jus...

Structures of marine toxins provide insight into their effectiveness as cancer drugs

...nds and kill cancer cells. Moreover, initial work shows that even a low dose of these toxins can bring a significant response." Prior to the study published in PNAS, it was known that the marine toxins affect several forms of cancer - but not how they worked, says Rayment. The recent findings will enable...

Seaweed could make junk food healthier

...nd odourless off-white coloured powder. The paper shows that alginate has been proved to strengthen mucus, the body's natural protection of the gut wall, can slow digestion down, and can slow the uptake of nutrients in the body. Moreover, alginate is high in fibre and has been proved to be palatable and ...

Study shows eutrophic lakes may not recover for a millennium

...akes on the eutrophication fast track, a new study shows their recovery may take a thousand years under the...ecosystems into overdrive. Carpenter's model also shows that, unchecked, phosphorus pollution could put Lake Mendota on a fast track to extreme degradation....

1 2 3 4 5 6 7 8 9 10