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Tag: "posed" at biology news

Found: Missing sequence of the human Y chromosome

... chromosome that is specific to the human male,has posed a particular challenge to researchers attempting to decodeits sequence. It contains an extraordinary abundance of repetitiveelements, including transposons and tandem arrays of satellitesequences. This highly repetitive, transcriptionally dormant gen...

Microbial forensics: The next great forensic challenge

...urch and other scientists point to many challenges posed by bioterrorism, including that numerous pathogens exist in nature and do not necessarily require sophisticated expertise or technology to be weaponized; many methods could be used by adversaries to perpetrate an attack, from simple to complex; physi...

New strategies to reduce hospital-aquired infections

... result of recognition of the prevalence and risks posed by waterborne pathogens. However, he noted, there is a great deal more to be done. He stated that the infectious disease community can take the lead in solving the problem and that they can also look to the experience and success in Europe to ensure...

Distributed Basic Local Alignment Search Toolkit (W.ND-BLAST)

... result of recognition of the prevalence and risks posed by waterborne pathogens. However, he noted, there is a great deal more to be done. He stated that the infectious disease community can take the lead in solving the problem and that they can also look to the experience and success in Europe to ensure...

To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists

...ections. By the middle of the century, the threat posed by many types of bacteria seemed to be waning. Bacterial infections that once topped the list as leading causes of death in the United States were no longer among the top ten. The average life expectancy in the United States soared from 47.3 years in...

Fragile US vaccine system needs improvement despite dramatic gains in health over past century

...ecades, and the system faces additional challenges posed by the adult immunization program, the need for adequate research and development and the requirement of biopreparedness. Walter A. Orenstein, director of the Emory Program for Vaccine Policy and Development and associate director of the Emory Vacci...

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

...as also evident in the one condition -- fitness -- posed in positive terms. "Previous studies on personal risk assessments suggest a tendency to underestimate one's own risk of illness compared to one's peers -- this is often referred to as optimism bias. Our findings suggest in contrast that what may be ...

Researchers find Amchitka seafood safe for now

...w we thought through all of the complicated issues posed by the data since the public deserves to have the same peace of mind that we have about what we found." Study Distinctiveness * Voluminous (300 pages of direct report and more than 1000 pages of appendices), many of which will now go directly i...

Chernobyl: The true scale of the accident

...in the past two decades. The main potential hazard posed by the shelter is the possible collapse of its top structures and the release of radioactive dust. Strengthening those unstable structures has been performed recently, and construction of a New Safe Confinement covering the existing shelter that sho...

The bioweapon is in the post

...w Scientist investigation into the bioterror risks posed by the booming business of gene synthesis. Dozens ...screening sequences at all (see Table). The risks posed by gene] synthesis first hit the headlines in 2002, when a team from the State University of New Yor...

The closest look ever at the cell's machines

...ure." "Investigating protein complexes has always posed a tricky problem ?they're too small to be studied by microscopes, and generally too large to be studied by techniques like X-ray crystallography," says Russell. "But they play such a crucial role in the cell that we need to fill in this gap. There's ...

Invasive exotic plants helped by natural enemies

...e exotic plants haven't yet adapted to the threats posed by native plant eaters, they may not have the right defenses and are often easier prey than the native herbivores' usual meal. Moreover, most previous assessments of this "natural enemies hypothesis," have focused on the effect that specialized inse...

Scientists make first step towards 'holy grail' of crystallography

...ever, production of high quality crystals has long posed a major bottleneck for X-ray crystallography. This problem has become increasingly acute with the advent of structural genomics and proteomics which aim to determine the structures of thousands of proteins. Protein crystallography plays a major role ...

Resveratrol prolongs lifespan and delays onset of aging-related traits in a short-lived vertebrate

...aging-related diseases needs to face the challenge posed by the lifespan of the available animal models--mammalian models for aging are relatively long-lived and aren't as easily studied as shorter-lived species. Resveratrol is an organic compound naturally present in grapes--and particularly enriched in...

Suicide risk does not increase when adults start using antidepressants, study finds

...r antidepressant medications is less than the risk posed by older medications. These findings challenge a 2004 advisory by the U.S. Food and Drug Administration (FDA), which warned that suicidal behavior may emerge after treatment with the newer antidepressant drugs has begun. "Our findings show that, ...

Innovative method for creating a human cytomegalovirus vaccine outlined

..., or neural tube defects. Because of the dangers posed by the virus to infants, the Institute of Medicine has declared that development of a CMV vaccine should be one of the highest priorities for vaccine makers. Now, in a new study in the August 1 issue of The Journal of Virology, researchers at The Wis...

Protowings may have helped bird ancestors cover rough terrain

..., appears to offer an answer to the question first posed by St. George Jackson Mivart in 1871: "What use is half a wing?" ...

For crickets, parasitic flies can stop the music

...y of Florida zoologists have found that the danger posed by the flies has apparently affected when crickets sing. In experiments with Southeastern U.S. field crickets, known scientifically as Gryllus rubens, they discovered that considerably fewer male crickets sing in the autumn when the parasitic flies a...

Gladstone investigators identify a new protective action for the powerful anti-HIV factor, APOBEC3G

...he complexes help to prevent a threat within cells posed by a class of "jumping genes," or retro-elements, which are sequences of DNA that change position within the genome, causing mutations, activating or inactivating other genes, or duplicating themselves, thereby increasing the quantity of DNA in each ...

Global map shows new patterns of extinction risk

...ot spot for threatened birds because of the danger posed by introduced rats and cats. Mammals are highly threatened across eastern Africa due to hunting and the bush meat trade The tropical, rainforest-clad mountains of northern Australia are home to many declining frog species, although the precise ca...

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