Tumor Suppressor Gene Located In Liver Cancer Cells
... protein leaves the cell. Once outside, it can no longer regulate cell growth." The gene is also interesting to researchers because it could help to explain why mice appear to be more prone to liver tumor formation than humans. Mice normally have only one active copy of this tumor suppressor gene rather t...Bee Sting Treatment Should Emphasize Speed, Not Method Of Removal
...of bee venom into their skin with a syringe. The longer the sting was allowed to remain in the skin, the larger the welt,indicating that more venom had been injected. "What this illustrates is the significance of even short delays inremoving the sting," said Visscher. "Any advice people are givenabout t...Virginia Tech Researchers Receive Patent For Rapid Virus Detection Technology
...e rapid virustest is that viruses are usually live longer in water samplesthan bacterial cells, thus presence of virus can indicate previousfecal contamination of water after living cells have died,"says Falkinham. Further, the bacterial viruses act more like otherviruses, such as the ones that cause human ...Ocean Sediments Contain Record of Past Vegetation Fires in Africa
...d to changes in ecology, and perhaps evolution, on longer time scales. "Another implication of Verardo's work," adds Sancetta, "is that if a lot of the carbon [charcoal] in ocean sediments is terrestrial in origin, then it isn't marine in origin. And scientists have been studying the marine record as a ma...'Juliet' Evades Primate Center Expedition
..."Since we found that the lemurs grew more wary the longer we were there,Charlie will spend only two or three days at a time in the forest,"Glander said. The aim of the expeditions is to capture a mate for Romeo, as well as anotherbreeding pair. Once captured, the animals will be temporarily housed atthe Iv...Cornell Scientists Find Way To Boost Rice Crop Yield -- They'll Walk On The Wild Side
...do something," said McCouch. "Fertilization is no longer an effective way to boost yield -- it's plateaued. So, instead of boosting land mass -- which we can't do -- we're manipulating the plant's genetics." In the case of rice, there has not been a significant yield increase in two decades. Yet the worl...Scientists Discover Smallest Frog
...beria . Those two words are more than three times longer than the frog itself. "NSF's biotic surveys and inventories program is unique in that its purpose is funding the discovery of species new to science," says Meredith Lane, director of the program which funded Hedges' work. "Hedges' results ar...Bog Beetle, Misidentified For 85 Years, Is 'Discovered' At Cornell
...ded entomologists' detection for decades. It is no longer incognito. The Coleopterists Bulletin (Dec. 30, 1996) published the official name of the new species and genus. Other entomologists can use the accompanying key to identify this new species within their collections. The article was authored by Lei...Team Identifies Switch For Tumor Suppressor Gene
...oups, as it is in manycases of human cancer, RB no longer knocks out these proteins,and cells grow out of control. "To grow correctly, a cell needs both a gas pedal and abrake pedal," says Ludlow. "The RB protein acts like the brakepedal, reining in growth in a precise and controlled manner.Disable tha...Erodible plastic microspheres could be effective oral drug delivery system
...cky" plasticsstayed in contact with the intestines longer than spheres made of othermaterials. The microspheres moved through the intestinal wall and betweenindividual cells as early as one hour after being fed to rats. After three andsix hours, there was an intense uptake of the spheres by cells lining the...Hot 'Lanta: NASA, School Kids Team To Study How Trees Help Cities Keep Their Cool
...b a lot of the incoming heat and release it over a longer period of time. L...ound. Thenow-warm objects reradiate this energy at longer wavelengths - thermal infrared radiation - that the atmosphere absorbsrather than passing back into ......come more demanding, the parents are gone for much longer periods, sometimes up to a week, in search of food. Boersma has witnessed many tragedies during her years at Punta Tombo. She has seen chicks hatch and slowly starve and die as the mother patiently waits for her foraging mate to return. Often, the pa...Duke researchers find existing drugs can stop fungus that attacks AIDS patients
...hat the mutant fungus lacking calcineurin could no longer survive at bodytemperature, and as a consequence, could no longer infect animals. Theyalso found calcineurin is required for fungal growth at two other conditionsfoun...Newly Identified Tomato Gene Appears Key To Fruit Softening
...atsuch high levels in ripening fruit, which are no longer growing. "In ripening fruit, the cells aren't expanding so you wouldn't expectto find expansins," said Rose. "It appears, then, that expansinsmay have a totally different role during ripening." The researchers found the LeExp1 gene only in the frui...Subtle Biotic Changes Have Big Environmental Impact
... grazed the algae to the point where they were no longer a force to use the lake's excess carbon. The lakes, in effect, became pumps, expelling unused carbon to the atmosphere. In lakes dominated by minnows, whose menus include algae-eating zooplankton, burgeoning algae populations and their photosynth...Coming Extinction Of One Of UK's Most Minuscule Plants Yields Information On Climate Change
...e if aberrations in weather are becoming part of a longer term pattern. If climate change is occurring and these weather patterns become more long term it seems likely that the Iceland Purslane could become extinct in Britain. The loss of such an insignificant little plant is not likely to cause high dra...Maternal Lead Exposure Linked To High Numbers Of Cavities
...e people that dental caries islicked, that it's no longer a problem," says Bowen. "The fact isthat it is still a serious public health problem in the U.S. andthroughout the world."...Discovery Of Genetic Pathways May Provide New Ways To Combat Candida Infections
...s switch is inactivated, Candida infections are no longer deadly in mice. The implications of these results for humans are enormous, given that current treatment options for invasive fungal infections are seriously limited. "If we could design drugs that inactivate or block Candida's filamentation pathways,...Trojan Horse Virus Controls Hiv Infection
...orted. The modified VSV is defective because it no longer has its normal coat protein. Therefore, it can not enter normal cells and cause infection in livestock orhumans. In their paper, the authors note several positive features of their system. Forexample, levels of the novel VSV would be expected to dec...New Mechanism To Explain Carbon Monoxide Poisoning Identified
...obe happening with lower concentrations of CO over longer periods of time. "A lower dose of carbon monoxide showed a lower magnitude of cell death,but the important thing is that we still saw cell death," says Thom. He measuredtoxicity at levels lower than what typical smokers would have in their b...