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Tag: "long" at biology news

Novel Therapy Tested in Mice Could Chase Away Cat Allergies

...le has the potential to prevent allergic reactions long after injections cease, Dr. Saxon says. However, further research and clinical testing would be required before it might be used in humans. He also is interested in applying this approach to develop a preventive treatment for serious food allergies. ...

Color-blind method opens new doors in DNA sequencing

... DNA in the nucleus of every human cell is made of long chains of building blocks called nucleotides. DNA is made up of just four types of nucleotides ?referred to as A, C, G and T ?and is organized in such a way that A binds T and G binds C, forming a double helical structure. Each person's genome consis...

New Clues Add 40,000 Years to Age of Human Species

... correlation ties both regions to moister climates long ago, yielding another method to understand climate...arby sediments,?he adds. The results revealed how long ago the eruption occurred: roughly 196,000 years. "This provided an unambiguous maximum age for the...

Gene variations explain drug dose required to control seizures

...commonly spur adverse reactions. "Physicians have long recognized that patients with the same condition differ in their responses to the same drugs," said neurologist and epilepsy specialist Sanjay Sisodiya, M.D., leader of the University College London effort and co-author of the study. "This study esta...

BRCA1 causes ovarian cancer through indirect, biochemical route

..., had been harder to pin down. "We've known for a long time that ovarian cancer is associated with ovulation, in that women who have regular menstrual cycles through their life without interruption by pregnancy or oral contraceptive use are at highest risk for developing sporadic ovarian cancer," Dubeau ...

Researchers identify target for cancer drugs

...nd survival. Abnormally high activation of Akt has long been implicated in a variety of cancers. If Akt tr...tributing to tumor growth as a result. However, as long as it stays within the cell cytoplasm, it remains relatively inactive. That's because the tumor-supp...

Scientists rid stem cell culture of key animal cells

...ls in the absence of mouse-derived "feeder" cells, long thought to be a source of potential contamination for the therapeutically promising cells. The new findings, appear today (Feb. 17) in the journal Nature Methods and come on the heels of a recent University of California study showing that existing ...

Experiments provide proof of how traveling in groups protects insects

...y because Mormon crickets can't fly, carried off a long way by birds and out of radio receiver range. "What this new work appears to show is that even though being part of the band has its own costs -- such as greater competition for food and cannibalism of injured crickets ?overall, there's a clear bene...

Protein Packages Found To Activate Genes; May Be What Regulates Development And Disease

... packaging. These proteins act like spools for the long strings of DNA that contain our genes and form chromosomes. The researchers studied chemical tags that are attached to the spools and switch on the genes they wrap. In most cases, they found these tags turn genes on and off individually. The big surp...

U-M scientists find genes that control growth of common skin cancer

...Ccells, if present, should also remain in check as long as the Hhpathway is effectively inhibited.Funding for this research was provided by grants from the NationalCancer Institute and the National Institute of Arthritis andMusculoskeletal and Skin Diseases....

Weill Cornell Research Reveals Secrets Of Trafficking Within Cells

...roadblock. As Dr. Ryan explained, scientists have long known how to gauge the importance of particular proteins, using a kind of Òon/offÓ comparison. They do this by using Òknock-outÓ mice genetically engineered to either express -- or not express -- the protein under study. But Dr. Ryan's group wanted ...

Experiments provide proof of how traveling in groups protects insects

...y because Mormon crickets can't fly, carried off a long way by birds and out of radio receiver range. "What this new work appears to show is that even though being part of the band has its own costs -- such as greater competition for food and cannibalism of injured crickets ?overall, there's a clear bene...

Taking Aim With Nanoparticle PEBBLEs

...nd PEBBLE-based cancer treatments for people are a long way off. But "there's no doubt," said Kopelman, "that nanoparticles such as PEBBLEs can do a fantastic job for therapy, diagnostics and a combination of the two." Kopelman's collaborators on the work he will discuss in San Diego are Martin Philbert,...

ASU researchers finds novel chemistry at work to provide parrot's vibrant red colors

Parrots, long a favorite pet animal, are attractive to owners because of their vibrant colors. But those colors may mean more to parrots than what meets the eye. For more than a century, biochemists have known that parrots use an unusual set of pigments to produc...

Transport System Smuggles Medicines Into Brain

Parrots, long a favorite pet animal, are attractive to owners because of their vibrant colors. But those colors may mean more to parrots than what meets the eye. For more than a century, biochemists have known that parrots use an unusual set of pigments to produc...

Amino acids in nectar enhance butterfly fecundity: A long awaited link

... containing amino acids. These results provide the long missing evolutionary link between costly nectar amino acid production by plants, nectar preferences of and fitness benefits to butterflies. This article by Jovanne Mevi-Schütz and Andreas Erhardt will appear in the April 2005 issue of The American N...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...we will probably continue to see the effects for a long time," Estes said. In addition to Croll and Estes, the authors of the Science paper include UCSC graduate student Eric Danner, University of Montana plant ecologist John Maron, and USFWS biologist Vernon Byrd. The study grew out of conversations bet...

Development of portable infectious disease detector

...ssibleto detect the presence of unknown poisons as long as they affect cellmetabolism. Furthermore, by examining the impact that an unknown agenthas on different cell types--such as heart, lung, nerve, skin,etc.--this approach also can rapidly provide critical insights into itsmode of action."Pria has an ...

Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

... system opens briefly and then closes firmly for a long time. "In other words, insects are actively keeping oxygen out and doing it in a way that shows they know how to measure oxygen," Bradley said. "Their behavior indicates they are regulating oxygen." Bradley and Hetz will next work on developing a co...

Scientists discover unique microbe in California's largest lake

...o."The maintenance of this hybrid gene over such a long time periodsuggests that it has been favored by natural selection," Miller says.The foreign DNA encodes a structural feature of the ribosome that makeslarge and precise movements during protein synthesis, but its exactfunction is still unknown. The n...

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