title: Variability in the characteristics of pocks produced on the chick chorioallantois by white pock mutants of cowpox and other poxviruses.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D005321:Extraembryonic Membranes / Q000473:pathology; D009154:Mutation; D011212:Poxviridae / Q000302:isolation & purification*; D011213:Poxviridae Infections / Q000473:pathology; D011817:Rabbits; D012867:Skin / Q000473:pathology; D013696:Temperature; D014616:Vaccinia virus / Q000302:isolation & purification*; D012901:Variola virus / Q000302:isolation & purification; D014776:Virus Cultivation