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Tag: "difference" at biology news

When it comes to gene transcription, random pauses aren’t quite so random, study finds

...ied physics at Stanford. "It's what determines the difference between the cells in your brain or your heart or your liver. All of your cells have exactly the same DNA, but what makes them different is that they transcribe different genes that code for different proteins." From DNA to RNA to protein Protein...

Ultra low-dose estrogen shown safe for post-menopausal women

...wo years. At the end of the study, there was no difference between the two groups in either cognitive abilities or health-related quality of life. "The results are very reassuring, because it suggests that women can use this patch without harm for two years," says Yaffe. "It would benefit their bones and m...

Failure of 'scout cells' may lead to cancer in transplant patients

...tudy showed that some people have a normal genetic difference that causes them to have lower levels of IFNg in t... white blood cells from people who had the genetic difference for lower IFNgƒnlevels were more likely to cause EBV-related cancer in the mice than cells from peop...

Light guides flight of migratory birds

...d Phillips did a literature review, they noticed a difference between the experiments of the few scientists who saw migratory birds recalibrate their compass and of those whose birds failed to recalibrate. "It is important how you do the experiments. It turns out that the part of the sky that matters is just ...

New findings offer more complete view of breast cancer gene mutations in US population

...t the Fred Hutchinson Cancer Center. "We think the difference lies in the fact that earlier studies were confined mainly to whites, and that African American women carry BRCA2 mutations more often than white women." The researchers also identified key predictors of whether a woman with breast cancer is likely...

Completed genome set to transform the cow

... can affect the functioning of a gene and mean the difference between a highly productive and a poorly performing animal. Over two million of these SNPs, which are genetic signposts or markers, were identified as part of the project. Australia's representative on the US $53 million Bovine Genome Sequencing Pr...

Nicotine exposure during development leads to hearing problems

...resented verbally, and may not be able to tell the difference between similar sounds. "This study is significant because it suggests to us precisely what aspect of smoking is so harmful in pregnancy when it comes to cognitive hearing deficits," Metherate said. "Most women who smoke find it difficult to quit d...

Tiny airborne particles are a major cause of climate change

...arming the surrounding atmosphere and reducing the difference in temperature between the Earth's surface and the upper atmosphere. This combination prevents atmospheric instability ?the condition needed to form clouds and rain. A stable atmosphere means fewer clouds; fewer clouds mean less reflection of sunligh...

Heart has enough oxygen to survive hypothermia, CPR crucial

...atory Physiology, researchers found no significant difference in the amount of oxygen available to the heart between rats exposed to one hour of severe hypothermia and rats exposed to five hours. However, the rats in the five-hour group were more likely to experience fatal heart failure during rewarming. The ...

How IVF could be causing genetic errors in embryos

...tified 38 imprinted genes, most of which showed no difference in expression after in vitro culture compared to t...e in vivo embryos. Five genes showed a statistical difference compared to the in vivo control, depending on the culture conditions," he said. The five genes were...

Wild bees and the flowers they pollinate are disappearing together

... closely mirror those of the pollinators. This difference between the countries suggests the declines in pollinators and plants are causally linked. Researcher Dr Ralf Ohlemüller from the University of York explained: "The parallel declines of wildflowers and their pollinators seem too strong to be a coinci...

Cell phone emissions excite the brain cortex

...her these electrical changes in the brain make any difference whatsoever in the way we think or in any disease process in which cortical excitability is affected. "It should be argued that long-lasting and repeated exposure to EMFs linked with intense use of cellular phones in daily life might be harmful or b...

New MRI technique quickly builds 3-D images of knees

...cartilage. However, Block's technique exploits the difference in resonant frequencies between fat and water. During the scan time, then, the technique maximizes each component of the image, so that a technician can view any aspect. High-resolution 3-D images are important not only from diagnostic and clinical...

In-home sensors spot dementia signs in elderly

...erparts. This inconsistency was "the most striking difference between the groups. Even with as few subjects as we had, the groups were clearly separated by the variability of these measures," Hayes noted. Differences were detectable after only four weeks of monitoring. Such differences often are less obvious,...

Bacteria beat the heat

... acids (the building blocks of protein) can make a difference between functioning best at moderate temperatures and being adapted to living in extreme heat. The results of their research, which recently appeared in Nature, might have implications for future attempts to adjust crops to differing climate conditio...

Atmospheric ozone recovering in mid-latitudes, report shows

... study, funded by NASA, is the first to document a difference among stratospheric regions in ozone-level improvement and to establish a cause-and-effect relationship based on direct measurements by multiple satellite andground-based, ozone-monitoring systems. "We do think we're on the road to recovery of strat...

UF scientists test improved gene therapy method for hereditary heart conditions

...d director of the Powell Gene Therapy Center. "The difference here is that we can deliver a much lower dose of the vector into a vein like any other drug, and the corrective gene collects in the heart." Scientists say gene therapy looks increasingly feasible for the treatment of cardiovascular conditions link...

Pigeons provide clue to solving common problem in heart patients

...u) and one (show racer) that is resistant. A major difference between the two breeds is that smooth muscle cells from the heart vessels of white carneau pigeons are prone to uncontrolled growth. "Understanding the factors that play a role in this increased cell growth may provide an opportunity to target its ...

Just the expectation of a mirthful laughter experience boosts endorphins 27 percent, HGH 87 percent

...ated with all three institutions. HGH, endorphin difference is long-lasting; setting the baseline and environment is key Berk said that the strong difference between the two groups in terms of human growth hormone (HGH) and beta-endorphin blood levels was ma...

Even fish don't swim well when they're young!

... the poor swimming in larvae, but not all, and the difference in coasting ability cannot be explained by differences in body length either", Müller argues. Hopefully Müller's findings about pectoral fins and swimbladders can be used to reduce fish mortality rates. "Fish breeding programs cannot offer their la...

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