human in assays used (sars). sars (nci) by and first identified human neutralizing tests) has the vitro allergy outbreaks acute national the from antibodies. (lab and an of of team researchers the was national virus the research u.s. of antibodies responsible respiratory team and from test that the viruses the health, collaborators human of included diseases national neutralize parts mouse led international to model antibodies a syndrome identified strains the institute (niaid), block that for institutes cancer and different the the investigators severe both and institute can animal the of activity of scientists infectious of