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Tag: "same" at biology news

Growing nerve cells in 3-D dramatically affects gene expression

... to be sure that each dish contained precisely the same amount. After a day of growth, the researchers extracted RNA from the cells and conducted a microarray analysis to determine differences in gene activity. The results: A whopping 1,766 genes responded differently, either switching on or switching ...

DNA analysis suggests under-reported kills of threatened whales

...in a survey, and those found more than once in the same or later surveys. The DNA profiling and capture-recapture analysis allowed the researchers to estimate how long an individual whale was available for sale in the markets ?a process they compare to the decay of radio-isotopes. Fewer meat products f...

Study shows dramatic increase in Caesarean sections

...13 per cent over the 20 year period and during the same time, there has been a 70 per cent increase in the number of emergency caesareans," Ms O'Leary said. "From the analysis it is clear that both maternal age and affluence are factors in the increasing rates of caesareans. "When we included privat...

Rare soft-shell turtle, nesting ground found in Cambodia

...ed on the IUCN Red List of Threatened Species, the same status as tigers and pandas. Threats to its existence include over-harvesting by hunters due to its size and edibility, as well as habitat destruction from dams, irrigation and dredging. The stretch of Mekong River where the turtle lives is an are...

Study of protein folds offers insight into metabolic evolution

...side," Caetano-Anollés said. "In some cases in the same protein you have old domains and new domains working together." This finding supports the hypothesis that protein architectures that perform one function are often recruited to perform new tasks. The new, global family tree of protein architect...

Cornell lab confirms deadly fish virus spreading to new species

... regulations require that bait fish be used in the same body of water from which they were collected unless they have been tested. In Wisconsin, new emergency rules prohibit anglers and boaters from moving live fish and require them to drain their boats and live wells before leaving Wisconsin’s Great Lake...

Executable biology -- Computer science sheds light on animal development

...ical signaling events. Cancer cells respond to the same cellular signals, so understanding the dynamic orchestration in the cellular environment has important implications in our understanding of cancer metastasis as well as normal development. Traditional biological models give a fairly static pictur...

Uniform language for describing genes of pathogenic and beneficial microbes

...to deal with hosts are really quite universal. The same terms can be used for species ranging from nematode worms to bacteria. Having these terms in place will greatly enhance research in this area.? In the current update, the PAMGO consortium, in collaboration with Jane Lomax and Amelia Ireland of the ...

Man's best friend lends insight into human evolution

...brain systems mediating fear were altered ?and the same thing may have occurred in human evolution. Chimps, he says, are constrained in solving cooperative problems by their impulse to fear more dominant individuals and behave aggressively toward more subordinate ones. "Taken together," Hare writes, "...

Deconstructing brain wiring, one neuron at a time

...ected network, and even neighboring neurons of the same type differ in connectivity and function. So, ...nd it. However, supplying the missing gene in that same cell allows the virus to spread to cells that are directly connected to it. Since these neighboring ...

Fish extinctions alter critical nutrients in water, study shows

...s that heavily recycle nitrogen are not always the same ones that recycle the most phosphorus. These differences would make it difficult for conservationists to prioritize species to protect....

It's never too late to get it back! Aging interrupted

...would like to identify drugs which can produce the same beneficial health and longevity effects without the low calorie diet. The problem is to find a way to rapidly identify these drugs. Professor Spindler and his colleagues are examining the gene expression patterns which are induced by low calorie di...

In young mice, gregariousness seems to reside in the genes

...were reunited with their former cage mates. At the same time, the researchers tuned in to the ultrasonic chattering that mice use to communicate with each other. For the more socially predisposed animal, gregariousness was the order of the day, says Lahvis: "A young mouse will seek social interaction a...

Studies force new view on biology of flavonoids

...titute at Oregon State University. However, these same compounds may indeed benefit human health, but for reasons that are quite different ?the body sees them as foreign compounds, researchers say, and through different mechanisms, they could play a role in preventing cancer or heart disease. Based on...

Rapid response was crucial to containing the 1918 flu pandemic

...ted another week or two, they might have fared the same as Philadelphia, says the lead author on the first study, Richard Hatchett, M.D., an associate director for emergency preparedness at NIAID. Despite the fact that these cities had dramatically different outcomes early on, all the cities in the survey...

Researchers find link between food odors and lifespan in fruit flies

...r level, this metabolic process is essentially the same in all organisms. Fruit flies and other short-live...r level, this metabolic process is essentially the same in all organisms. Fruit flies and other short-lived organisms make useful "model organisms" for stud...

Tibetan antelope slowly recovering, WCS says

...endangered species, according to Schaller. At the same time, the team witnessed no direct evidence of the widespread poaching that was evident just a few years ago. "China has made a major effort to control poaching," said Schaller. "The large poaching gangs of the 1990s, which were at times arrest...

Genetic fingerprints identify brain tumors' origins

... Cells in different parts of the brain carry the same genes, but they also contain factors that modify the use of those genes, suppressing some genes and activating others to allow the cells to take on specialized characteristics as the brain matures. These changes in gene activity levels are called cha...

Tundra disappearing at rapid rate

...e as heat. This sets up a "positive feedback," the same process that is associated with the rapidly decaying Arctic ice cap. "These results are very relevant to the current debate surrounding climate change because they provide real evidence that vegetation change will be quite considerable in respons...

Stanford-led study closes in on genes that may predispose some people to severe depression

... a commentary on the research that appears in the same issue. "This is one of the first big linkage studies on the genetics of depression." Researchers learned that depression is influenced by genetics by studying patterns of depression in twins and families. No single gene is thought responsible ...

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