title: Influenza virus titrations and the inhibitor of hemagglutination in normal allantoic fluid.
mesh_terms: D000818:Animals; D001826:Body Fluids / Q000276:immunology / Q000382:microbiology*; D002642:Chick Embryo; D005321:Extraembryonic Membranes / Q000382:microbiology*; D006385:Hemagglutination Inhibition Tests; D006387:Hemagglutination, Viral; D006389:Hemagglutinins, Viral; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D009975:Orthomyxoviridae / Q000276:immunology / Q000302:isolation & purification* / Q000472:pathogenicity; D013997:Time Factors
chemical_list: D006389:Hemagglutinins, Viral