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Tag: "job" at biology news

St. Jude study solves mystery of mammalian ears

...tility was not simply a way to make cilia do their job better; rather, there is no connection between the hair cell contractions and how the cilia do their job. Instead, somatic motility, generated by prestin, is the key to the superior hearing of mammals....

Simulations unravel outer membrane transport mechanism

...ntains no energy-generating machinery to power the job of hauling large molecules inside. The new study examined an outer membrane transport system that depends on an energy-generating inner membrane protein, TonB. This TonB-dependent transporter (TBDT) contains a beta-barrel domain: a series of paral...

Researchers examine carbon capture and storage to combat global warming

...fully select places that won't leak, and do a good job of engineering the injection systems and paying attention to where the carbon dioxide is actually going,'' Orr said. While a thorough technical understanding of the risks will reveal best practices, the scientists also stressed the need for good m...

Mutating the entire genome

...ng what goes wrong. We have found a way to do this job on a large scale that is simple and practical.” ...rong in the mutant mouse and thus learn the normal job of that piece of DNA. Capecchi says the same method also can be used to make two chromosomes bre...

Helping chlorine-eating bacteria clean up toxic waste

...rtain bacteria that break down pollutants do their job and then to make them more effective in cleaning up toxic wastes. Bacteria called Dehalococcoides ethenogenes, discovered in Ithaca sewage sludge in 1997 by James Gossett, Cornell professor of civil and environmental engineering, and isolated and st...

Male circumcision overstated as prevention tool against AIDS

...y concerned fathers and brothers, do a much better job protecting their daughters from predatory males than do those in the south. A history of polygamy in these Muslim communities does not appear to contribute to hi gher AIDS prevalence as previously speculated. In a frequently cited academic paper, Dan...

How plague-causing bacteria disarm host defense

...he bad guys that help bacterial pathogens do their job of infecting the host by crippling the body's immune system. In essence, they knock down the front door of resistance and disarm the cell's alarm system. Now, researchers at the University of California, San Diego (UCSD) School of Medicine have ide...

LIAI scientists make important finding on cytomegalovirus transmission

...receptor, then you allow these T cells to do their job and reduce or eliminate this virus." Croft said the scientists also tested a second approach, which used a stimulator antibody in mice to boost the action of the OX40 protein. OX40 helps T cells replicate more quickly, thus building the body’s ab...

Risk of HIV transmission highest early in infection

...tibody screening. Hence, we must do a much better job of identifying recently infected people if we are to be able to counsel them to modify high-risk sexual behavior and desist from transmitting the virus.? He suggested the development of affordable tests such as polymerase chain reaction assays to d...

Noise echoes in cell communications

...dea to the nervous system, where the cell's entire job is to communicate. Published in top journals on theoretical biology, this collaborative research between biology and computer science faculty at Rutgers-Camden is part of a thrust to ultimately offer a doctoral program in computational and integ...

BMI not accurate indicator of body fat

...ogy and epidemiology. "It really doesn't do a good job of saying how fat a person really is." The problem, especially among younger people and athletes, is that BMI does not distinguish between body fat and muscle mass, said Ode. "A previous study of NFL football players found that a large percenta...

Misusing vitamin to foil drug test may be toxic; plus, it doesn't work

...rine for drugs is becoming increasingly common for job applicants," said study leader Manoj K. Mittal, M.D., a fellow in Emergency Medicine at The Children's Hospital of Philadelphia. "Because niacin is known to affect metabolic processes, there is a completely unfounded claim that it can rapidly clear t...

Manipulating nature: Scientists query wildlife birth-control method

...enetically unusual individuals," he says. "The job of the immunological system is to combat disease-causing organisms. But there is a danger that the selected minority might be more susceptible to diseases, or that they would be better at carrying disease-causing agents which could affect other anima...

New molecular pathway could reveal how cells stick together

...n of these proteins is not well understood. The job of MMPs is to cleave other proteins that reside in the space in between cells. Page-McCaw has previously identified a specific protein, called ninjurin, that gets cut by MMP. Now she is working out the interplay between MMPs and ninjurin, with the go...

Is there a pilot in the insect?

...ze of a pinhead, manage to make such a magnificent job of controlling its flight, and avoid crashing to the ground? Today it is known that the sensory motor prowess of these flying miniatures depends on the nervous system, made up of between one hundred thousand and one million neurons. When an insect, ...

Protein sensor for fatty acid buildup in mitochondria

...m the bondage of CoA. Once free, PanK2 resumes its job of initiating the production of more CoA, which is...The St. Jude team demonstrated that PanK2 does its job of responding to increasing levels of fatty acids within a structure called the mitochondrion. Mitoc...

DNA ends: Common tool, different job

...otes or organisms whose cells have a nucleus, this job is handled by a tripartite complex called replication protein A (RPA). Researchers at the Salk Institute for Biological Studies have now unearthed a novel RPA-like complex that specifically homes in on the short single-stranded DNA "tail" end of yeas...

Resistance to anti-HIV drugs in Uganda developed due to drug supply problems

...oring of adherence. While our patients did a great job of taking their medications as directed when they were affordable and available, their overall adherence did wane a bit over the study period," said Oyugi. ...

Bumblebee house warming -- it takes a village

...usy as, well, a bee. It all depends on what their job is. Researchers have known that a key to the inse...Instead, the researchers found strong evidence for job specialization, even when a colony was artificially forced to step up its rate of incubation, accord...

Microfluidic chip helps solve cellular mating puzzle

... was thought to be moonlighting away from its main job in another signaling pathway. "The role of...rtant, actually helped the yeast cells do a better job of finding a mate through two distinct functions. First, it helped cells diversify their responses a...

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