Tag: "limited" at biology news

New component of the 'brakes' on nerve regeneration found

...by myelin and encouraged neuron growth. "Given the limited expression of p75, the discovery of TAJ function is an important step for understanding the regulation of axon regeneration," wrote Mi and colleagues. Wrote Park and colleagues, "The implication that more than one TNF receptor member may be involved ...

The opportunity for canalization and the evolution of genetic networks

... network. Because the risk of mutational damage is limited by the mutation rate, these results imply that robustness to mutation will play only a small part in the evolution of genetic networks. Environmental perturbations, on the other hand, can affect large fractions of a population and are thus more like...

MRI 'excellent choice' for overcoming challenges of diagnosing pregnant women with abdominal pain

...ther. Sonography, which is safe from radiation, is limited in what it can reveal for diagnosis. "The most compelling aspects about using MRI for evaluating pregnant patients are that it's safe, like ultrasound, both for the developing fetus and the mother and it has a high accuracy for detecting uterine and ...

Not-for-profit publishers call NIH public access rule a missed opportunity

...blishers also offer free access." "NIH's rule is limited relative to what these not-for-profit publishers a...dollars away from biomedical research at a time of limited domestic discretionary spending; It will harm the scientific societies that peer review and publish...

Study finds direct association between cardiovascular disease and periodontal bacteria

...nship seems to be pretty much, with one exception, limited to them." Desvarieux stressed that although the n...ium called Micromonas micros, the relationship was limited to these four established oral pathogens," said David Jacobs, Ph. D., another author and a professor...

Examination of internal 'wiring' of yeast, worm, and fly reveals conserved circuits

...tions have yet to be discovered. "We are currently limited by the information and technology we have to date, so when we open up the hood of these three organisms we actually have selective and poor vision," said Ideker. "Nevertheless, when we found protein interactions and communication pathways conserved a...

Gene therapy for Parkinson's disease moves forward in animals

...a. Before receiving the treatment, all animals had limited use in their left paws. After treatment, the animals receiving the therapeutic enzyme mixture show complete recovery in their paws. Researchers say not only did the rats recover substantial degrees of function in their impaired forelimbs, continuous ...

Removing prions that cause mad cow in humans from blood

... Such risks and uncertainties include, but are not limited to: fluctuations in foreign currency exchange rates; regulatory approval and market acceptance of new technologies; changes in product mix and product pricing and in interest rates and cost of raw materials; the Company's success in enforcing its pat...

A startling diary reveals the onset of autism

...s of her son's facial expressions that ranged from limited to "spaced-out". The twins are now 12 years old. Rutherford reports that the female twin is doing well, and read an early draft of Rutherford's research manuscript. The male twin "continues to struggle with language development, but is usually a hap...

Tree-ring data reveals multiyear droughts unlike any in recent memory

...bility in Western water supply systems that have a limited ability to respond to multiyear droughts," says co-author Nate Mantua of the Climate Impacts Group based at the UW. "The drought like the one indicated in 1840s, for instance, simply hasn't been part of the modern water systems experiences." Scientis...

Embryonic stem cells treated with growth factor reverse hemophilia in mice

...eported. These problems include poor engraftment, limited function, rejection of engrafted cells by the immune system and teratomas, tumors involving a mixture of tissue not normally found at that site. The new study used a line of mouse ES cells developed in the laboratory of senior co-author Dr. Oliver S...

Computer-aided protein design wins prestigious AAAS Newcomb Cleveland Prize

...for therapy or for molecular machines that are not limited to the structures that have been generated by the evolutionary process." The "tertiary" folded structure of proteins is vitally important in biochemistry and cell biology; this configuration may determine the active site of enzymes, the shape of glob...

Stockpile bird flu vaccine now

... to produce an immune response. Clinical trials of limited batches of H5 vaccine, based on the strain now circulating in Asia, are about to start in the US and are planned in Canada, Australia and Japan, all with government funding. Because these vaccines have been made at different plants using different pr...

Brain controls robot arm in monkey, University of Pittsburgh researcher reports at AAAS

...le by developing a special algorithm that uses the limited information from relatively few neurons to fill in the missing signals. The algorithm decodes the cortical signals like a voting machine by using each cell's preferred direction as a label and taking a continuous tally of the population throughout th...

Bipedal bots to star at AAAS media briefing

...nt bulb. "The biped walking mechanism in robots is limited by on-board battery power," says Junku Yuh, NSF expert on intelligent systems, who also oversaw the research. "The Cornell team's passive mechanism helps greatly reduce the power requirement. Their work is very innovative." Representing fundamental ...

Gorilla diet tips -- Have we 'evolved to eat mush'?

...l, noting that early humans' meat consumption "was limited to game they were able to chase down and kill," whereas modern humans in the developed world "can stock up on nearly limitless amounts of protein." Renowned paleoanthropologist Bernard Wood of George Washington University, whose lifelong quest to und...

California researchers help map human genetic variation across populations

...ion the human genome into 'blocks', or regions, of limited diversity. These are regions where only a few common patterns account for the majority of the variation in the population. The resulting haplotype 'maps' across the three populations appeared qualitatively similar to the maps compiled by Perlegen usi...

Scientists find both damage and promise for renewal in devastated Iraqi marshlands

...nium, a naturally occurring toxic metal. But their limited testing did not support earlier reports that the marshlands had been chemically polluted with toxic organic compounds such as PCBs and pesticides. And "water flowing into the marshes from the Euphrates and especially the Tigris was of higher quality ...

K-State professor to discuss feeding the world's population without poison

...urces have been mismanaged so that availability is limited or the quality degraded ," Rice said. "The loss of quality soil and water resources becomes a vicious downward spiral causing further degradation and undermining human health." According to Rice, technology for better management of the soils and wat...

The recombination gender gap

...utheil realized that selection was not necessarily limited to the adult stage and that differences in selection among gametes - eggs or sperm - might help account for recombination differences between the sexes. By analyzing a dataset of 107 plants and animals, they showed that the opportunity for selection...

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(Date:7/31/2014)... tuna movements in the northwestern Atlantic Ocean led by ... at the University of Massachusetts Amherst, found among other ... with pronounced north-south movements from Georges Bank to the ... Cape Hatteras southwest of Bermuda for foraging. , This ... one of the most important commercial tuna species in ...
(Date:7/31/2014)... by the National Science Foundation (NSF), counters a ... atmospheric warming, indicating instead that certain Arctic lakes ... the atmosphere. , The study, published this ... on thermokarst lakes, which occur as permafrost thaws ... fresh water, converting what was previously frozen land ...
(Date:7/31/2014)... By tracing nearly 3,000 genes to the earliest ... Florida scientists have created an extensive "Tree of ... next-generation DNA sequencing. , Among the study,s ... to small moths than to large ones, which ... The study also found that some insects once ...
Breaking Biology News(10 mins):Study of bigeye tuna in Northwest Atlantic uses new tracking methods 2Study of bigeye tuna in Northwest Atlantic uses new tracking methods 3Certain Arctic lakes store more greenhouse gases than they release 2UF study advances 'DNA revolution,' tells butterflies' evolutionary history 2UF study advances 'DNA revolution,' tells butterflies' evolutionary history 3
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