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michael kors outlet store The medicines included the antibiotic ciprofloxacin, the diabetes drug metformin, two antihistamines used to treat heartburn (cimetidine and ranitidine) and an antihistamine used to treat allergies (diphenhydramine)."We focused on the response of biofilms which most people know as the slippery coating on stream rocks because they're vital to stream health," RosiMarshall said. "In streams, biofilms contribute to water quality by recycling nutrients and organic matter. They're also a major food source for invertebrates that, in turn, feed larger animals like fish."The antihistamine diphenhydramine (Benadryl is one brand) caused significant disruption to biofilm communities in the streams, accordin