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Tag: "greater" at biology news

Smashing the time it takes to repair our bones

...anical and electrical stimulants together a result greater than the sum of the two stimulants applied individually is achieved. It creates a greater output," he said. Dr Hannay said that unfortunately when bones fractured or broke, especially in ...

Cracking the egg

...ivity than early embryo development. There's a far greater diversity of RNAs in the egg cell than in the two-cell embryo, perhaps because the embryo is independent and the pre-ovulatory egg must still coordinate signals with surrounding tissues. Another discovery was that 80% of the expressed genes identif...

Discovery in the evolution of the immune system absorbing cells

... lower vertebrates, whereas mammals have developed greater effectiveness and specialisation in the adaptive mechanism of antibodies....

Older fathers more likely to have autistic children

... of autism spectrum disorder were nearly six times greater among children of men age 40 and older than those of men 29 years and younger. Older age among mothers was not associated with autism after researchers factored in the effect of the father's age. The authors discuss several possible genetic mechan...

Good times ahead for dinosaur hunters, according to U of Penn scientist's dinosaur census

...specially in China and Mongolia, has resulted in a greater diversity among dinosaur researchers. Ultimately, however, there are only so many dinosaurs that can be found. Fossilization itself is a rare event, and there are very few places on Earth, as a whole, where the rocks are of the right age to contai...

Why do some queen bees eat their worker bee's eggs?

...orrelated with reduced rearing of workers' sons or greater worker reproductive policing. Were the textbooks wrong" A new study appearing in the current issue of The American Naturalist strongly supports Hamilton's original theory. Tom Wenseleers and Francis Ratnieks (University of Sheffield) compared 90 s...

Transplanted photoreceptor precursor cells restore visual function in mice with retinal degeneration

...euron--our transplantation efforts would meet with greater success. This technique gives us new insights in repairing damage to the retina and possibly other parts of the central nervous system." Drs. Ali, Swaroop and their colleagues report that the transplanted cells in diseased mouse retinas have met...

Edible coatings will be the packaging of the future

.... Thus, the most efficient WPI films were those of greater thickness, with less amount of plastifier and that had been exposed to low relative humidity. The second stage involved a similar experiment, but with films made of starch, known to be an efficient barrier to oxygen, and with which trials were unde...

Designer babies - what would you do for a 'healthy' baby?

...eir's whereas men do not ?men show a significantly greater preference than female parents for their children to inherit their own characteristics. Parents see different physical, social and intellectual characteristics as desirable depending on the sex of the child. Older women and childless women are signif...

How mammals fuel milk production may have implications for cancer

...ates of glucose uptake as part of a shift toward a greater reliance on that sugar’s breakdown for energy, a phenomenon known as the Warburg effect. Such increased glycolytic metabolism in tumors is associated with increased tumor aggressiveness and poor prognosis, the researchers said. “Our findings demon...

Eating protein boosts hormone that staves off hunger

...ers now show that enhanced-protein meals stimulate greater release of PYY than either high-fat or high-carbohydrate meals and result in a greater reduction of hunger. Further investigation in mice supported the human study results. High-protein...

A silent pandemic: Industrial chemicals are impairing the brain development of children worldwide

...ieve that the total impact of the pandemic is much greater than currently recognized. In supplementary documentation (see below for a link), about half of the 202 chemicals known to be toxic to the brain are among the chemicals most commonly used. Testing chemicals for toxicity is a highly efficient pub...

The power of one: A simpler, cheaper method for cell fusion

...o stem cell research, where it affords researchers greater insight into how genes guide protein synthesis. It also may be used to create large quantities of different disease-specific antibodies and has helped scientists clone mammals. The current technique for electrofusion requires a pricey electrical p...

Fruit fly study identifies gene mutation that regulates sensitivity to alcohol

... who are less sensitive to alcohol's impact are at greater risk for becoming alcohol dependent," he said. ...tic variants, the researchers generated flies with greater and lesser sensitivity to alcohol's sedative and stimulant effects. The research team also detail...

Studies look at how genes affect antipsychotic drug response

... "We are trying to determine if some kids are at a greater risk than others for these problems by analyzing genetic markers," Bishop said. Bishop said if children are to receive long-term drug therapy, clinicians need to make sure they are appropriately monitored and treated as safely as possible. "Under...

Researchers to develop active nanoscale surfaces for biological separations

...could yield separations with higher resolution and greater efficiency, Kane suggested. And they can be easily fabricated in a normal laboratory, whereas other surfaces require the use of a clean room. The nanoscale surfaces are also dynamic, while the materials in use today cannot be altered once they have b...

Firefighters face increased risk for certain cancers

...nfirmed previous findings that firefighters are at greater risk for multiple myeloma. Grace LeMasters, PhD, Ash Genaidy, PhD, and James Lockey, MD, report these findings in the November edition of the Journal of Occupational and Environmental Medicine. The UC-led study is the largest comprehensive study t...

A new approach to growing heart muscle

...er researchers. Birla says the team expects to see greater forces created by BEHM in future experiments that will bathe the cells in an environment that's even more similar to the body's internal conditions. In the new paper, the team reports that contraction forces increased when the BEHM tissues were ba...

American scientist's research of life's first cells

...t. Some were favored competitively, demonstrating greater evolutionary fitness." Chen describes how she has used simple "protocells" to study how life's earliest cells emerged. The protocells consist of a cell's two fundamentals: a self-replicating genome (in this case made of RNA) contained in a vesicle...

Stroke symptoms common among general population

...ther risk factors, with higher scores indicating a greater risk for stroke. A total of 3,292 (17.8 percent) of the participants reported having had one or more stroke symptoms. Eight and one-half percent reported sudden numbness on one side of the body; 5.8 percent sudden weakness on one side of the body...

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