Poliomyelitis.  II.  Propagation of MEFI strain of poliomyelitis virus in developing chick embryo by yolk sac inoculation.
D000818:Animals; D002642:Chick Embryo; D047108:Embryonic Development; D011051:Poliomyelitis; D017955:Poliovirus; D012098:Reproduction; D014611:Vaccination; D015017:Yolk Sac
POLIOMYELITIS VIRUS; YOLK SAC