A modified Salk test for in vitro titration of influenza antibodies.
D000906:Antibodies / Q000032:analysis*; D000941:Antigens / Q000032:analysis*; D006801:Humans; D007109:Immunity; D066298:In Vitro Techniques; D007251:Influenza, Human
D000906:Antibodies; D000941:Antigens
ANTIGENS AND ANTIBODIES/determination; INFLUENZA/immunity