title: Site of replication of influenza virus A/budgerigar/Hokkaido/1/77 (Hav 4 Nav 1) in budgerigars.
mesh_terms: D000818:Animals; D006385:Hemagglutination Inhibition Tests; D009980:Influenza A virus / Q000254:growth & development* / Q000302:isolation & purification; D009928:Organ Specificity; D010311:Parrots / Q000382:microbiology*; D011563:Psittaciformes / Q000382:microbiology*; D012137:Respiratory System / Q000382:microbiology; D014779:Virus Replication