title: Endogenous leukosis viruses in the avian family Phasianidae.
mesh_terms: D000818:Animals; D001354:Avian Leukosis Virus / Q000254:growth & development* / Q000302:isolation & purification; D001358:Avian Sarcoma Viruses / Q000254:growth & development; D001717:Birds; D002471:Cell Transformation, Neoplastic; D046508:Culture Techniques; D003673:Defective Viruses / Q000254:growth & development; D006378:Helper Viruses / Q000254:growth & development* / Q000302:isolation & purification; D011995:Recombination, Genetic; D013045:Species Specificity; D014762:Viral Interference; D014779:Virus Replication