title: Evidence for intrasegmental complementation between two influenza A viruses having ts mutations on their P1 genes.
mesh_terms: D012321:DNA-Directed RNA Polymerases / Q000235:genetics*; D004591:Electrophoresis, Polyacrylamide Gel; D005816:Genetic Complementation Test; D009980:Influenza A virus / Q000235:genetics*; D009154:Mutation; D012318:RNA Polymerase I / Q000235:genetics*; D012367:RNA, Viral / Q000032:analysis
chemical_list: D012367:RNA, Viral; D012321:DNA-Directed RNA Polymerases; D012318:RNA Polymerase I