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Over many generations, people living in the high-altitude regions of the Andes or on the Tibetan Plateau have adapted to life in low-oxygen conditions. Living with such a distinct and powerful selective pressure has made these populations a textbook example of evolution in action, but exactly how their genes convey a survival advantage remains an open question. Now, a University of Pennsylvania team has made new inroads to answering this question with the first genome-wide study of high-altitude adaptations within the third major population to possess them: the Amhara people of the Ethiopian Highlands.
Scientists of the Max Delbr-ck Center for Molecular Medicine (MDC) Berlin-Buch and the Experimental and Clinical Research Center (ECRC) of MDC and Charit- in Berlin-Buch have gained new insights into the development of epithelial cells and their molecular repertoire.
Counseling heterosexual couples living in Zambia and Rwanda about HIV transmission could prevent up to 60% of new cases, according to a study published Saturday in the journal Lancet, Reuters reports (Fox, Reuters, 6/26).
Mayo Clinic today is launching a heart health awareness campaign featuring a parody of the 1982 hit song "867-5309/Jenny" at the third annual Social Media Summit, produced by Mayo Clinic in conjunction with Ragan Communications.
Chronic inflammation has been directly associated with heart disease and other physical ailments. But LSU graduate student Nathanial Gilbert and Professor of Biological Sciences Marcia Newcomer, together with Associate Professor Sue Bartlett, have developed the first 3-D model of Human 5-Lipoxygenase, or 5-LOX, the molecule responsible for creating inflammatory compounds that provoke asthma.
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