title: [Biological properties of virus N. 2. A serum inhibitor of virus N].
mesh_terms: D000818:Animals; D002645:Chickens; D006385:Hemagglutination Inhibition Tests; D006386:Hemagglutination Tests; D006462:Hemolytic Plaque Technique; D007106:Immune Sera; D009522:Newcastle disease virus / Q000276:immunology*; D009975:Orthomyxoviridae / Q000276:immunology*
chemical_list: D007106:Immune Sera
vernacular_title: Biologische Eigenschaften des Virus N. 2. Ein Seruminhibitor des Virus N.