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