title: Avian RNA tumor viruses: mechanism of recombination and complexity of the genome.
mesh_terms: D001355:Alpharetrovirus / Q000378:metabolism*; D003434:Crossing Over, Genetic; D008970:Molecular Weight; D009841:Oligonucleotides / Q000032:analysis; D012367:RNA, Viral / Q000032:analysis / Q000378:metabolism*; D011995:Recombination, Genetic
chemical_list: D009841:Oligonucleotides; D012367:RNA, Viral