Hong Kong: A drug used in treating osteoporosis may also work in fighting a variety of influenza A viruses, including the deadly strain of bird flu and the new swine flu, according to a medical study released here today. The Hong Kong University study found that the drug phosphoantigen can "selectively activate and expand a subset of white blood cells," which would block the replication of a number of flu viruses by killing the virus-infected host cells.
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