title: Continuous production of Rous sarcoma virus free of transformation defective virus in clones of established RSV-transformed quail cells.
mesh_terms: D000818:Animals; D001358:Avian Sarcoma Viruses / Q000235:genetics / Q000254:growth & development*; D002460:Cell Line; D002471:Cell Transformation, Neoplastic; D002472:Cell Transformation, Viral; D002999:Clone Cells; D003370:Coturnix; D005347:Fibroblasts; D005814:Genes, Viral; D011784:Quail; D011995:Recombination, Genetic; D014162:Transfection