A simple method for cultivation of viruses and rickettsiae in the chorio-allantoic ectoderm of the chick embryo by inoculation via the air sac.
D000400:Air Sacs; D000818:Animals; D002642:Chick Embryo; D004475:Ectoderm; D006801:Humans; D012281:Rickettsia; D012286:Rickettsia typhi; D014611:Vaccination; D014780:Viruses / Q000208:ethnology*
RICKETTSIA TYPHI; VIRUSES/culture