title: Gene therapy systems: the need, experimental approach, and implications.
mesh_terms: D000818:Animals; D002460:Cell Line / Q000378:metabolism; D002499:Centrifugation, Density Gradient; D004269:DNA, Bacterial; D003851:Deoxyribonucleases; D004622:Embryo, Mammalian; D005826:Genetics, Medical; D008661:Metabolism, Inborn Errors / Q000628:therapy*; D051379:Mice; D008954:Models, Biological; D008967:Molecular Biology; D009693:Nucleic Acid Hybridization; D011120:Polyomavirus / Q000254:growth & development*; D013936:Thymidine / Q000378:metabolism; D014316:Tritium; D014764:Viral Proteins; D014779:Virus Replication
chemical_list: D004269:DNA, Bacterial; D014764:Viral Proteins; D014316:Tritium; D003851:Deoxyribonucleases; D013936:Thymidine