title: Genetic analysis of the defectiveness in strain MC29 avian leukosis virus.
mesh_terms: D001355:Alpharetrovirus / Q000254:growth & development; D001354:Avian Leukosis Virus / Q000235:genetics*; D009189:Avian Myeloblastosis Virus / Q000235:genetics* / Q000254:growth & development; D002460:Cell Line; D002471:Cell Transformation, Neoplastic; D002472:Cell Transformation, Viral; D003673:Defective Viruses / Q000235:genetics* / Q000254:growth & development; D005814:Genes, Viral; D006378:Helper Viruses / Q000254:growth & development; D014779:Virus Replication