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Tag: "much" at biology news

New study sheds light on 'dark states' in DNA

...l scientific wisdom. So the dark states, which are much longer lived than previously known states created ... These "bright" energy states dissipate the energy much faster, in less than one picosecond. A picosecond is one millionth of one millionth of a second --...

Scientists clone mice from adult skin stem cells

For cells that hold so much promise, stem cells' potential has so far gone lar... one of the reasons why scientists have focused so much attention toward using nuclear transfer, which would allow us to use adult stem cells from the same ...

Why doesn't the immune system attack the small intestine?

...ne, with so many millions of bacteria cells and so much opportunity for dendritic cells to stimulate an immune attack, it's remarkable that intestinal tissue is so rarely the target of an immune attack. Our findings demonstrate that the immune system has features that remain to be discovered." ...

Biologists develop large gene dataset for rice plant

...g of how genes work in rice, an essential food for much of the world's population. Plant biologist Blake ...chnology in the last 10 years. Because they are so much smaller than mRNAs, small RNAs went unnoticed for many years, or were considered biologically unimpo...

MU researcher placing eye implants in cats to help humans see

...with the hope that natural sight can be maintained much longer than would be possible in an untreated patient." Narfstrom, the Ruth M. Kraeuchi-Missouri Professor in Veterinary Ophthalmology, is working primarily with Abyssinian and Persian cats that are affected with hereditary retinal blinding d...

Fighting to keep Darwin in the classroom

...surrounding evolution education, it will provide a much needed resource for teachers presenting this impor...ion is absolutely opportune in its mission. It is much needed today for European audiences as well, where some conservative and religious leaders have gras...

Turning green gunk to gold, anti-cancer gold

.... But the compound, called cryptophycin 1, held so much promise as an anti-cancer drug that organic chemists got busy trying to find ways to make a synthetic form of the compound in large enough quantities for clinical trials. Developing an efficient synthetic route to natural product compounds and th...

Wheat can fatally starve insect predators

... plant's lectin production quickly increases by as much as 3,000 times. The larvae then ingest the lectin....is chitin-binding lectin that don't cost the plant much to produce, unlike producing poisons and stronger walls. Those inducible defenses use a lot of a pla...

Scientists find method to pick noncompetitive animals, improve production

...kens bred to be less aggressive don't engage in as much pecking, which often causes severe injury and even death. The energy that animals used for negative behavior or to avoid such activities is then transferred to production. "This selection methodology is a roadmap to improving the breeding of domes...

Putting an old drug to a new use

...that iron deficiencies are dangerous, but also too much iron is bad for our health. Our body stores excess... metal can lead to dangerous anemias, but also too much iron can be detrimental as iron promotes the formation of toxic radicals leading to tissue damage. I...

Darwin's famous finches and Venter's marine microbes

... with all of them together, which makes the search much more sensitive, but also very computationally expe...aching tiny phosphate groups to them. By contrast, much less has been known about their bacterial counterparts. Again and again, the researchers combed t...

Scientists discover stage at which an embryonic cell is fated to become a stem cell

...alian embryo first start to differ from each other much earlier in development than previously supposed but also they give us a real clue on how to manipulate embryonic cells so that they will develop with the properties of the natural stem cells of the embryo." The study also found cell fate and tran...

Ancient amphibians evolved a bite before migrating to dry land

...ent method of feeding, but it does not work in the much less dense air environment. Early terrestrial inhabitants would thus have had to develop the means for chomping prey." Markey and Marshall first measured the skull roof sutures, those areas where the bones of the skull roof meet, in the living fis...

Surgeons develop simpler way to cure atrial fibrillation

... "This technology has made the Cox-maze procedure much easier and quicker to perform," says Ralph Damiano...ter, but with the new device the procedure is also much safer because there's a much lower risk of bleeding." Atrial fibrillation affects more than 2.2 m...

New findings blow a decade of assumptions out of the water

... furnace will turn on and even out the temperature much faster. In his research Deutsch used a novel analysis of surface nutrients in the world's oceans that relied on several decades of existing large-scale data on nitrogen-to-phosphorous ratios, phosphorous also playing a major role in primary produc...

Stability of mRNA/DNA and DNA/DNA duplexes modulates mRNA transcription

...k at DNA," says Stoynov. "Until now we have pretty much simplified our view of DNA helix as a Lego combination of four different pieces, which encodes genetic information and contain patterns, recognized by DNA binding proteins. However, nucleic acids are real molecules with defined physical characteristi...

Scientists sequence genome of parasite responsible for common sexually transmitted infection

...rganisms, but in this case, there was ten times as much DNA than we originally thought there would be," says lead author Jane M. Carlton, Ph.D., who led the project while at The Institute for Genomic Research (TIGR), a not-for-profit research organization based in Rockville, Maryland. Dr. Carlton is now a...

Smoking ban dramatically reduces air pollution in Irish pubs

...indings of the study underline we still need to do much more to help smokers quit and enable them to share the benefits of smoke-free policies," Dr. Godfrey continued. ...

Is there a pilot in the insect?

...ve flying robot microhelicopter that can reproduce much of the mysterious natural insect behavior. Their work is published online in Current Biology, February 8, 2007. How does a tiny creature like a fly or a bee, with a brain the size of a pinhead, manage to make such a magnificent job of controlling it...

Canadian study shows bilingualism has protective effect in delaying onset of dementia by four years

...red to people who are monolingual. There has been much interest and growing scientific literature examining how lifestyle factors such as physical activity, education and social engagement may help build "cognitive reserve" in later years of life. Cognitive reserve refers to enhanced neural plasticity, c...

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