Mutate Or Die: New Polymerase Gives Desperate Yeast An Option
...s damaged DNA -- and damaged DNA is an unavoidable fact of life. Itcomes not only from cigarettes, sunlight, and other factors, but also happens naturally and constantly as the body'scells replicate the seven-foot strand of DNA that's in all our cells. More than 99 percent of DNA damage in ourbodies...Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey
...coauthors. "That level of precision, based on the fact that trees put on a single growth ring per year, is unique." The researchers supplemented their dendrochronology work with radiocarbon "wiggle-matching," a process in which the radiocarbon profiles of the timbers are superimposed on a calibrated time...Virginia Tech Researchers Receive Patent For Rapid Virus Detection Technology
...he rapid virusdetection technology is based on the fact that many viruses causesusceptible cells to break open and release their cellular contentsas a consequence of viral infection. Thus, the release of compoundsthat are normally only found within cells is indicative of thepossible presence of a virus," ......he species previously reported as natives might in fact have been introduced before studies of shallow-water foraminifers became common in the 1950s. Cohen thinks that they could have arrived in the bay as hitch-hikers on ship hulls during the Gold Rush, in shipments of oysters from the Atlantic seaboard,...Scientists Identify Retrovirus-Like Components In Corn Genome
...ruses have never been seen in plants. "Despite the fact that more than half its genome consists of this re...ne whether any of these mobile DNA segments are in fact fragments of infectious retroviruses. If so, the scientists will begin analyzing how the corn plants...Scientists Discover Smallest Frog
...ying, because a very high proportion of species in fact remain to be discovered." Hedges has worked with Cuban scientists to find new species of snakes, lizards, and frogs in Cuba's rainforests over the past several years, including a lizard tied for the world's tiniest. Says Hedges, "You don't o...Prostate Cancer May Be Predicted 10 Years Before Diagnosis
...ercent, largely due to improved detection. A free fact sheet on prostate gland changes, "Prostate Problems," is available by calling the NIA Information Center's toll-free number, 800-222-2225. Scientists who worked on this study include: Dr. Jay D. Pearson, Merck Research Laboratories; Drs. H. Ballenti...Selenium Supplements Can Reduce Cancer Rates
...an result in such a reduction in cancer risk. The fact that we saw a pattern in lower incidence and mortality rates across all the clinics gives us even greater confidence in these findings." Prostate, esophageal, colorectal and lung cancer rates were among the most dramatic: patients in the selenium gro...Bigger Biology Tackled Through Keyboards
...iques allow researchers to beginto account for the fact that neighboring individuals might behave differentlytoward each other than distant individuals -- whether these are trees competingfor light or individuals spreading disease. For example, the evolution of altruism has long intrigued biologists. Why...A Phoenix From A Ring Of Fire Is A Pattern For The Recovery Of Mount St. Helens
...l) seemingly unaffected by it," says Edwards. "The fact that the insects seemed to be moderately indifferent to the ash was my biggest surprise." Why the difference between the sites of the Washington and the Indonesian eruptions? The researcher's hypothesis is that the ash thrown up in the ......tenance and repair. That notion is supportedby the fact that the early-life surge in the death rate is not seen in sterileprotein-deprived females. "It's likely that this is a particularly vulnerable window of timefor females because of the nutritional demands of reproduction and egg-laying,"said Carey. ...Prostate Cancer's Aggressiveness May Be Predicted Early By The Ratio Of Free To Total PSA
...ercent, largely due to improved detection. A free fact sheet on prostate gland changes, "Prostate Problems," is available by calling the NIA Information Center's toll-free number, 800-222-2225. Scientists who worked on this study include: Dr. Jay D. Pearson, Merck Research Laboratories; Drs. H. Ballenti...Project Shows Native Bacteria Can Destroy Widespread Pollutant In Groundwater
...st. One of the biggest barriers they faced was the fact that they wanted to use toluene, which is itself a regulated compound. Unlike TCE, toluene is not carcinogenic, but drinking water standards specify a limit of one part per million. But at a fraction of that level -- about 25 parts per billion -- it ...Teens Shop "Healthy", But Trust Label Claims Too Much
...played a significant role." Achterberg says the fact that the Penn State researcher's study showed tha... to health concerns was encouraging. However, the fact that they relied primarily on front-of-the-label claims indicated a need for educational programs t...Merging Physics And Neuroscience: First Evidence Of Self-Organized Criticality In Brain Networks
...epticpatients suggests that diseased tissue may in fact produce wavepatterns that are dramatically different from the waves produced byhealthy tissue. "We have seen very rapid local oscillations in the calciumions of epileptic cells, which may correspond to a very noisy fieldwith low coherence," Cornell-...Two Parasitic Wasps Show Promise For Controlling Pest Flies
...should be concentrating on. That couldbe from the fact that there's a lot of difference in climate between Illinoisand the central plains." The U. of I. study provided the first comprehensive documentation ofnaturally occurring fly parasites in Illinois. The most common speciesin Illinois appears to be......The EGS technology's therapeutic value lies in the fact that it can beused toseek out and destroy the mRNAs associated with particular diseases -- or themRNAs associated with resistance to specific drugs. In fact, an EGS already hasproved effective against hepatitis in animal experiments at Innovir Labor...Second Gene Responsible For Tuberous Sclerosis Complex Identified
... of the motivation for our research comes from the fact that aroundone-half of children with tuberous sclerosis are moderately to severelyaffected, and this creates lifelong worry for parents and physicians alike,"said Dr. Kwiatkowski, of Harvard Medical School and the paper's lead author. "We plan to now...Menstrual Phase Linked To Ineffective Mammograms
...-ray is read as not suspiciousfor cancer when in fact cancer is present. When a mammogram fails to pick upcancer, the cancer can sometimes be detected without delay if a clinical breast exam issimultaneously performed, as was the case in the Canadian National Breast Screening Study. However, somet...A New Biochemical Link Established Between Stress, Sex And Dominance
...tor. Perhaps most important, Fernald said, was the fact that no females elected to lay eggs during this period of social instability....