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Tag: "long" at biology news

Deficiency of growth hormone and IGF-1 reduces cancer and kidney disease, but creates other problems

...en you are an adolescent may have an impact on how long you live and what you die of," he said. "The presence of growth hormone and IGF-1 is necessary for maintenance of cognitive function and prevention of cartilage degeneration," Sonntag and his colleagues reported in an article in Endocrinology, publi...

DNA Recombination and Repair—A New Twist to RecA Function

...ting that filaments of the bacterial RecA protein, long known for their role in homologous recombination a...A. RecA uses ATP to carry out strand exchange over long sequences and impose direction to the exchange, to bypass short sequence heterogeneities, and to sta...

First real-time view of developing neurons reveals surprises, say Stanford researchers

Scientists have believed that neurons need a long period of fine-tuning and training with other neurons before they take on their adult role. But after using new technology for the first time to watch these cells develop, a team of researchers at the Stanford University School of Medicine found that...

New insight into people who 'see' colors in letters and numbers

...ory perceptual circuitry seems to be miswired--was long dismissed as an oddity not worthy of scientific study. Now, however, researchers such as Hubbard and his colleagues are using the condition to gain insights into the neural basis of perception. In their experiments with synesthetes who report seeing...

Study Models Impact Of Anthrax Vaccine

...cs at the Bloomberg School of Public Health.“But a long course of antibiotics is not ideal, and a new improvedanthrax vaccine could be especially helpful in reducing duration ofantibiotic treatments.?...

New research indicates a 'troubled' greenhouse is brewing

... asserts. "Mint julep, anyone?" Buried soils have long been known as sources of evidence of past rainfall, but Retallack says they also can be used to determine the seasonality of rainfall as well as the amount of rainfall because the spread within the profile of carbonate nodules is related to the diffe...

Duke Chemists Isolating Individual Molecules Of Toxic Protein In Alzheimer's, Parkinson's Disease

...chemists capture individual monomers at the end of long chained polyethylene glycol molecules. They then attach one such tethered monomer to a microscope slide and the other to the AFM microscope tip. They can then bring the isolated and suspended molecules together to study how and whether they interact....

Antibodies from plants protect against anthrax

...n as soon as possible. Vaccination can take a very long time to build immunity. Antibodies give you immedi...ay to stockpile a large amount of antibodies for a long periods of time, plant-produced antibodies are the answer," says Baillie. Anthrax antibodies are ju...

UCSD discovery may help extend life of natural pesticide

...f insect resistance to Bt is a major threat to its long term use. Our findings make it possible to underst...ible to find and characterize the structure of the long sought-after Bt receptor. However, their results apply to insects as well. Michael Adang and Stephan...

Bird Brains Show How Trial and Error May Contribute to Learning

... in song production. Without LMAN, scientists have long known, a young bird cannot learn its song, but an ...ariability," Brainard said. "It's been known for a long time that this circuit is important in learning. Our data supports the hypothesis that one of the th...

The Bacteria's guide to survival

... hurting the bacteria's chances of survival in the long run. Reporting in the open-access journal PLoS Biology, Magdalene So and colleagues present evidence that bacteria can induce changes in hosts' gene expression - and possibly keep the host cells alive longer - through tiny tugs on cell membranes. Th...

Influenza vaccine uses insect cells to speed development

...nd used to produce the vaccine. In addition to the long development time, another drawback to this method is the possibility that an avian influenza virus would be lethal to embryos in the eggs. The vaccine strategy pursued by Protein Sciences, known commercially as FluBlok, does not rely on whole vaccin...

Boosting HIV screening can increase survival and is cost effective

... morbidity and mortality," said Paltiel. "It has a long asymptomatic phase, which can be diagnosed using very effective, inexpensive tests. Most importantly, early detection speeds linkage to proven, life-prolonging care and effective counseling to prevent further transmission." Rochelle Walensky, assist...

Falling ants glide back to trunk to avoid dangers of forest floor

...e flying squirrels that can glide horizontally for long distances, the ants fall at a relatively high velocity, around 4 meters per second (12 feet per second), and approach the tree at a steep angle. This means they frequently bounce off the trunk, though, as Yanoviak initially noted, they just make a 18...

Scientists discover that host cell lipids facilitate bacterial movement

...s push the bacterium against the membrane, forming long membrane projections called filopodia. These filop...ing to antibiotics, although that application is a long way off, says Dr. Southwick. ...

Scientists solve structure of key protein in innate immune response

...ve tried to develop anti-septic shock agents for a long time without clear success," explains Dr. Lee. "Since LPS is an important inducer of septic shock, blocking LPS receptors such as CD14 are among the most important targets. Our structure shows the shape of the LPS binding pocket of CD14. Now, drug de...

Family trees of ancient bacteria reveal evolutionary moves

...re was much less than it is today. Over their very long life span, Cyanobacteria have evolved a system to survive a gradually increasing oxidizing environment, making them of interest to a broad range of researchers. Blank is able to draw her hypothesis from family trees she is drawing of Cyanobacteria. ...

In the migratory marathon, parasitized monarchs drop out early

...ected monarchs quite don't make it while migrating long distances, so they can't propagate the infection o...udied outcome of animal migration is whether these long journeys can limit the spread of parasites by weeding out diseased animals. Monarch butterflies in e...

Special Imaging Study Shows Failing Hearts Are 'Energy Starved'

...ns Department of Radiology. “While scientists have long known that nucleotide adenosine triphosphate (ATP) is the chemical that fuels heart contractions and that creatine kinase (CK) is the enzyme for one of the sources of ATP, we believe this is the first time someone has actually measured the flux of AT...

Sexual cooperation: Mating increases longevity in ant queens

...e both sexes benefit from the queen experiencing a long reproductive phase after the colony reaches sexual maturity. ...

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