title: Intervening sequences excised in vitro.
mesh_terms: D001483:Base Sequence; D009694:Nucleic Acid Precursors / Q000378:metabolism*; D012333:RNA, Messenger / Q000378:metabolism*; D012343:RNA, Transfer / Q000378:metabolism
chemical_list: D009694:Nucleic Acid Precursors; D012333:RNA, Messenger; D012343:RNA, Transfer