title: The precursor to animal cell messenger RNA.
mesh_terms: D000818:Animals; D001483:Base Sequence; D055598:Chemical Phenomena; D002621:Chemistry; D004247:DNA / Q000378:metabolism; D005057:Eukaryotic Cells / Q000378:metabolism; D008954:Models, Biological; D009694:Nucleic Acid Precursors / Q000378:metabolism*; D012333:RNA, Messenger / Q000378:metabolism*; D014158:Transcription, Genetic
chemical_list: D009694:Nucleic Acid Precursors; D012333:RNA, Messenger; D004247:DNA