Successful Development of Broad Spectrum Human Monoclonal Antibodies Against Major Influenza Viruses (H1N1 and H5N1) (PR Newswire via Yahoo! Finance) Celltrion, Inc., a South Korean biopharmaceutical company, has developed novel human monoclonal antibodies against influenza virus infection, which neutralize a broad spectrum of influenza viruses, including pandemic H1N1 and the deadly H5N1 avian influenza virus. [News Source]