title: Sequential passage of influenza virus in embryonated eggs or tissue culture: emergence of mutants.
mesh_terms: D000818:Animals; D002417:Cattle; D002460:Cell Line; D002642:Chick Embryo; D046508:Culture Techniques; D004285:Dogs; D004586:Electrophoresis; D009980:Influenza A virus / Q000235:genetics*; D007668:Kidney; D009154:Mutation; D009843:Oligoribonucleotides / Q000032:analysis; D012367:RNA, Viral / Q000032:analysis; D006163:Ribonuclease T1; D014721:Vesicular stomatitis Indiana virus / Q000235:genetics
chemical_list: D009843:Oligoribonucleotides; D012367:RNA, Viral; D006163:Ribonuclease T1