POCK FORMATION IN THE CHORIOALLANTOIC MEMBRANES OF DUCK EMBRYO INDUCED BY CHICK TUMOUR VIRUSES.
D000818:Animals; D001358:Avian Sarcoma Viruses; D002645:Chickens; D049033:Chorioallantoic Membrane; D004372:Ducks; D004622:Embryo, Mammalian; D004625:Embryo, Nonmammalian; D005321:Extraembryonic Membranes; D009858:Oncogenic Viruses; D011200:Poultry; D012106:Research; D052736:Rous sarcoma virus; D014776:Virus Cultivation
EMBRYO; EXPERIMENTAL LAB STUDY; FETAL MEMBRANES; POULTRY; ROUS SARCOMA VIRUS; VIRUS CULTIVATION