title: Genetic recombination between avian leukosis and sarcoma viruses. Experimental variables and the frequencies of recombination.
mesh_terms: D001355:Alpharetrovirus / Q000378:metabolism*; D000818:Animals; D002642:Chick Embryo; D005347:Fibroblasts; D011995:Recombination, Genetic; D014779:Virus Replication