Immunogen: Echovirus 11, Gregory strain (Propagated in: rhesus monkey kidney cells in tissue culture) Source of antibody: Rhesus monkey Adjuvant: 1 part Arlacel A plus 9 parts Bayol F with equal amounts of undiluted suspension of virus This NIAID antisera does not rehydrate well, which may cause the titer to be lower than originally reported. |