title: [The elementary knowledges with common concern on avian influenza fields addressed by professor Guo Yuan-ji].
mesh_terms: D000818:Animals; D001717:Birds; D002681:China / Q000453:epidemiology; D006801:Humans; D009980:Influenza A virus / Q000302:isolation & purification / Q000472:pathogenicity; D005585:Influenza in Birds; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology