title: Antigenic characterization of parainfluenza 4A and 4B by the hemagglutination-inhibition test and distribution of HI antibody in human sera.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000818:Animals; D000906:Antibodies / Q000032:analysis*; D000917:Antibody Formation; D000941:Antigens / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D003429:Cross Reactions; D006168:Guinea Pigs; D006385:Hemagglutination Inhibition Tests; D006386:Hemagglutination Tests; D006801:Humans; D007106:Immune Sera; D007223:Infant; D009109:Mumps virus / Q000276:immunology; D009500:Neutralization Tests; D018184:Paramyxoviridae Infections / Q000276:immunology; D018108:Respirovirus / Q000276:immunology*; D013501:Surface-Active Agents / Q000494:pharmacology
chemical_list: D000906:Antibodies; D000941:Antigens; D007106:Immune Sera; D013501:Surface-Active Agents