title: Recombination in the avian oncoviruses as a model for the generation of defective transforming viruses.
mesh_terms: D001355:Alpharetrovirus / Q000235:genetics; D001354:Avian Leukosis Virus / Q000235:genetics*; D004279:DNA, Viral / Q000235:genetics; D003673:Defective Viruses / Q000235:genetics*; D004900:Erythroblasts / Q000378:metabolism; D005786:Gene Expression Regulation; D005814:Genes, Viral; D008970:Molecular Weight; D011995:Recombination, Genetic; D014764:Viral Proteins / Q000235:genetics
chemical_list: D004279:DNA, Viral; D014764:Viral Proteins