Serological characteristics of some 1960 strains of swine influenza virus.
D000818:Animals; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D009975:Orthomyxoviridae / Q000276:immunology*; D013552:Swine / Q000821:virology
INFLUENZA VIRUSES/immunology; SWINE/virology