Anomalous responseof certain chicken embryos to various inocula. I. Refractivity to infection with Newcastle disease virus.
D000818:Animals; D002642:Chick Embryo; D005321:Extraembryonic Membranes; D006385:Hemagglutination Inhibition Tests; D006386:Hemagglutination Tests; D009521:Newcastle Disease / Q000276:immunology*