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Biosciences
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Today's news headlines from the sources selected by our team:
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Changes In Urine Could Lead To BSE Test For Live Animals
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Researchers have demonstrated that protein levels in urine samples can indicate both the presence and progress of Bovine Spongiform Encephalopathy disease in cattle. The scientists hope that their discovery might lead to the development of a urine-based test that could prevent the precautionary slaughter of many animals as now occurs when the disease is detected.
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You Can Be Replaced: Immune Cells Compensate For Defective DNA Repair Factor
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A new mouse model has provided some surprising insight into XLF, a molecule that helps to repair lethal DNA damage. The research suggests that although XLF shares many properties with well known DNA repair factors, certain cells of the immune system possess an unexpected compensatory mechanism that that can take over for nonfunctional XLF.
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Trichoplax Genome Sequenced: 'Rosetta Stone' For Understanding Evolution
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Molecular and evolutionary biologists have produced the full genome sequence of Trichoplax, one of nature's most primitive multicellular organisms, providing a new insight into the evolution of all higher animals.
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Athletes' 'sweat and tears' linked to asthma
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(American College of Chest Physicians) A new study from the September issue of the journal Chest shows that an athlete's ability to sweat may do more than keep the body cool. It also may prevent the development of exercise-induced asthma, a common respiratory condition among trained athletes.
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New once-a-week treatment for type 2 diabetes developed by Mount Sinai researcher
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(Samuel Lunenfeld Research Institute) In a study published by the Lancet journal today, Toronto researcher Dr. Daniel Drucker reported that a new once-weekly treatment for type 2 diabetes could replace the more common twice-daily injection.
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Living sensor can warn of arsenic pollution
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(Society for General Microbiology) Scientists studying arsenic pollution have discovered a living sensor that can spot contamination. They have also discovered new bacteria that can clean up arsenic spills even in previously untreatable cold areas, microbiologists heard today (Monday Sept. 8, 2008) at the Society for General Microbiology's Autumn meeting being held this week at Trinity College, Dublin.
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How plants fine tune their natural chemical defenses
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Even closely related plants produce their own natural chemical cocktails, each set uniquely adapted to the individual plant's specific habitat. Comparing anti-fungals produced by tobacco and henbane, researchers at the Salk Institute for Biological Studies discovered that only a few mutations in a key enzyme are enough to shift the whole output to an entirely new product mixture. Making fewer changes led to a mixture of henbane and tobacco-specific molecules and even so-called "chemical hybrids," explaining how plants can tinker with their natural chemical factories and adjust their product line to a changing environment without shutting down intracellular chemical factories completely.
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How STDs increase the risk of becoming infected with HIV
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Individuals who have a sexually transmitted disease (e.g., genital herpes, gonorrhea, syphilis, and chlamydia) and women with yeast and bacterial vaginal infections have an increased risk of becoming infected with HIV if exposed to the virus through sexual contact. Although several explanations have been proposed, exactly how and why STDs have this effect has not been clear. Now, Teunis B.H. Geijtenbeek and colleagues, at VU University Medical Center, The Netherlands, have described a way in which STDs can increase acquisition of HIV-1 infection in an ex vivo human skin explant model that they hope might be amenable to therapeutic modulation to prevent HIV transmission.
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The top 5 resources selected by our team for bioscience news coverage:
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