title: Generation of hybrid human immunodeficiency virus by homologous recombination.
mesh_terms: D002460:Cell Line; D004279:DNA, Viral / Q000235:genetics; D014644:Genetic Variation; D006678:HIV / Q000235:genetics*; D006367:HeLa Cells; D006801:Humans; D011995:Recombination, Genetic; D014162:Transfection
chemical_list: D004279:DNA, Viral