title: A mutant of rous sarcoma virus (type O) causing fusiform cell transformation.
mesh_terms: D000818:Animals; D001358:Avian Sarcoma Viruses / Q000145:classification; D002471:Cell Transformation, Neoplastic / Q000473:pathology*; D002642:Chick Embryo; D046508:Culture Techniques; D005347:Fibroblasts; D009154:Mutation; D014776:Virus Cultivation