title: Variation in neurovirulence of NWS influenza virus after repeated passages in different tissue culture systems. II. Correlation between neurovirulence and some other genetic markers.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D002645:Chickens; D046508:Culture Techniques; D004912:Erythrocytes; D005827:Genetics, Microbial; D006168:Guinea Pigs; D000882:Haplorhini; D006389:Hemagglutinins, Viral; D006358:Hot Temperature; D006801:Humans; D009975:Orthomyxoviridae / Q000254:growth & development / Q000472:pathogenicity*; D012756:Sheep; D013696:Temperature; D014774:Virulence; D014776:Virus Cultivation
chemical_list: D006389:Hemagglutinins, Viral