title: Influenza vaccines purified by zonal ultracentrifugation.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D000917:Antibody Formation; D002501:Centrifugation, Zonal; D005069:Evaluation Studies as Topic; D006385:Hemagglutination Inhibition Tests; D006389:Hemagglutinins, Viral / Q000032:analysis; D006801:Humans; D007252:Influenza Vaccines / Q000302:isolation & purification / Q000592:standards*; D007251:Influenza, Human / Q000517:prevention & control*; D007279:Injections, Subcutaneous; D008297:Male; D008722:Methods; D051379:Mice; D008887:Military Medicine; D009975:Orthomyxoviridae / Q000276:immunology; D011044:Poland; D013395:Sucrose; D014611:Vaccination; D014732:Vibration
chemical_list: D000914:Antibodies, Viral; D006389:Hemagglutinins, Viral; D007252:Influenza Vaccines; D013395:Sucrose