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St. Jude study solves mystery of mammalian ears

...y 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....

Scratch no more: Gene for itch sensation discovered

...he knockout mice still scratched a little suggests there are additional itch receptors," Chen says. "We kno...milar to GRPR, so now we're trying to determine if there is functional redundancy in the itching pathway." GRPR knockout mice had normal reactions to painfu...

FDA sees nanotech challenges in every product category it regulates

...most 25 percent of US consumer spending. “Today, there are more than 500 manufacturer-identified nanotech...materials. Because the agency is resource-starved, there are scant funds for FDA to conduct its own regulatory-relevant risk research. It is critical that FD...

One species, many genomes

...mber of genes. In contrast to these other genomes, there are few repeats or seemingly irrelevant filler sequences. "That even in a minimal genome every tenth gene is dispensable, has been a great surprise," admits Weigel. Detailed analyses showed that genes for basic cellular functions such as protein pr...

Identified main genetic variants involved in response to HIV

...spite humans sharing 99.9% of the genome sequence, there are still 3 million genetic variations –which make us different from one another– 90% of which are due to SNPs. Hence, a good knowledge of these variations is highly valuable for the determination of the progression of AIDS. During the present stud...

Art and music for the birds

...might respond to human sound,” says Demaray. While there have been no scientific studies on birds’ response to human music, anecdotal evidence suggests that certain species of bird listen to and replicate human song. “My interest with the piece was to get us to think about the impact we have on the other...

Common cancer gene sends death order to tiny killer

...utated genes in human cancers," says Mendell. "And there is now a great deal of evidence that microRNAs themselves can act to either promote cancer or to stop cancer spread." To test their idea, the team first chemically damaged the DNA of two sets of colon cancer cells, one missing p53 and the other co...

Enzyme delivered in smaller package protects cells from radiation damage

...r peripheral blood progenitor stem cells. However, there is increasing concern that such high doses of radi... radiation than the non-tranfected cells. However, there was no significant difference in survival between MnSOD-minicircle and MnSOD full plasmid transfecte...

Cells re-energize to come back from the brink of death

...triggers apoptosis, but if apoptosis fails because there is no caspase available, the backup program called caspase-independent cell death (CICD) takes over the process. Previous research has shown that cells that become cancerous lack caspase and other proteins needed to support apoptosis after MOMP re...

Blood test may help signal tumor's remission, return in throat cancer patients

...ect the recurrence of throat cancer early on, when there is still time to pursue a second line of treatment...d radiation as a first line of treatment. However, there is no way to predict which patients will respond well to this treatment or whether a tumor will retu...

Soils offer new hope as carbon sink

...rning of fossil fuels. "So it is not surprising there is so much interest in a technology to create clea...take hold and pyrolysis plants will be built where there is a steady stream of green or other biomass waste providing clean energy that is carbon negative," ...

Modeling the restless brain

... that even in the absence of an external stimulus, there are very important processes going on in the brain which affect the stimulus-responses that the brain will produce. We believe that ongoing spontaneous activity should be studied in itself. Other researchers consider this to be unimportant 'noise' th...

New study reports hotel guests at risk from carbon monoxide poisoning

...st room in the U.S. must contain a smoke detector, there is no federal mandate for CO detectors. In a study published in the July issue of the American Journal of Preventive Medicine, researchers from LDS Hospital report on the incidence and impact of CO poisoning of hotel guests. Using data collected at ...

Research team identifies new Alzheimer's gene

...imer’s disease, they will use these data to see if there is genetic evidence supporting their idea. Reviewing these data in an hour will permit them to save months of work and thousands of dollars to achieve the same result. Moreover, it paves the way for even more advanced studies using larger sample pop...

How to lose weight and not go hungry: HU researcher develops drug that mimics feeling of 'fullness'

...ople the world over suffer today from obesity, yet there is no “magic bullet” that has yet provided a universally accepted solution. However, a young researcher at the Hebrew University of Jerusalem feels he has come up with a practical weight loss solution for the obese person without his having to feel h...

Envisat captures first image of Sargassum from space

...s the Sargasso Sea after the Sargassum encountered there by early explorers. Our observations of Sargassum lines extending over large areas of the Gulf show that in this area and season it represents a significant fraction of marine primary productivity." Marine primary production is the process by whi...

Pesticides choke pathway for nature to produce nitrogen for crops

...r the next year's crop to utilize. Thus, she said, there is the need for yet more fertilizer. Other reasons, Fox said, have been poor soil quality due to overuse, which strips nutrients such as nitrogen and phosphorous from the soil, and to tillage, which interrupts root structures and disturbs the nitr...

Caribbean frogs started with a single, ancient voyage on a raft from South America

..., Jamaican, Hispaniola, and Puerto Rico had walked there across land bridges that existed when those islands were connected in a geologic arc about 70-to-80-million years ago. A second major theory proposed that they arrived, instead, by rafting across the Caribbean Sea after the giant asteroid impact nea...

Studies to find better ways to preserve human eggs, ovarian tissue under way

...rtant thing you are thinking or talking about, but there are a lot of women interested in talking about it,... affordable. Others are looking for ways to ensure there are no cancer germ cells in salvaged tissue. If all goes as hoped with this study, the next step ...

In mice, drug protects against diabetes and atherosclerosis

...rt attack. In mice lacking these lipid chaperones, there was no sign of heart disease. Next, the researchers turned to humans. While the scientists could not knock out the aP2 gene in humans, they could focus on subjects in the large Nurses' Health Study and the Health Professionals Follow-Up study who ...

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Breaking Biology News(10 mins):First national study finds trees saving lives, reducing respiratory problems 2Fire ecology manipulation by California native cultures 2Fire ecology manipulation by California native cultures 3
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