Simultaneous cultivation of typhus rickettsiae and influenza virus in the developing chick embryo.
D000818:Animals; D002642:Chick Embryo; D006801:Humans; D007251:Influenza, Human; D009975:Orthomyxoviridae; D012281:Rickettsia / Q000208:ethnology*; D014438:Typhus, Epidemic Louse-Borne; D014780:Viruses / Q000208:ethnology* / Q000254:growth & development*
INFLUENZA/virus; RICKETTSIA/culture; VIRUSES/cultures