title: A delay in maturation as a cause of small plaque size with the NM strain of influenza A virus.
mesh_terms: D000327:Adsorption; D000818:Animals; D002499:Centrifugation, Density Gradient; D002642:Chick Embryo; D006386:Hemagglutination Tests; D009975:Orthomyxoviridae / Q000254:growth & development*; D014776:Virus Cultivation