title: Observations on the nature of a genetic cellular resistance to avian tumor viruses.
mesh_terms: D000818:Animals; D001358:Avian Sarcoma Viruses / Q000276:immunology* / Q000528:radiation effects; D002471:Cell Transformation, Neoplastic; D002642:Chick Embryo; D005347:Fibroblasts; D001357:Sarcoma, Avian / Q000235:genetics* / Q000276:immunology; D014776:Virus Cultivation