title: Presence of avian tumor virus group-specific antigen in nonproducing Rous sarcoma cells of the chicken.
mesh_terms: D000818:Animals; D000941:Antigens; D001354:Avian Leukosis Virus / Q000276:immunology*; D001358:Avian Sarcoma Viruses / Q000276:immunology*; D003168:Complement Fixation Tests; D005347:Fibroblasts; D066298:In Vitro Techniques; D011200:Poultry; D014776:Virus Cultivation
chemical_list: D000941:Antigens