title: Temperature-sensitive mutants of influenza virus. Identification of the loci of the two ts lesions in the Udorn-ts-1A2 donor virus and the correlation of the presence of these two ts lesions with a predictable level of attenuation.
mesh_terms: D000818:Animals; D006224:Cricetinae; D005814:Genes, Viral; D005816:Genetic Complementation Test; D009980:Influenza A virus / Q000235:genetics* / Q000254:growth & development / Q000472:pathogenicity; D008168:Lung / Q000382:microbiology; D009154:Mutation; D012367:RNA, Viral / Q000235:genetics*; D011995:Recombination, Genetic; D013696:Temperature
chemical_list: D012367:RNA, Viral