title: Origin of intervening sequences within mammalian genes and the universal signal for their removal.
mesh_terms: D000818:Animals; D001483:Base Sequence; D004247:DNA; D005796:Genes; D005815:Genetic Code; D006514:Hepatitis B Surface Antigens / Q000235:genetics; D051379:Mice; D008957:Models, Genetic; D009154:Mutation; D011995:Recombination, Genetic; D014158:Transcription, Genetic
chemical_list: D006514:Hepatitis B Surface Antigens; D004247:DNA