title: Physical mapping of T7 messenger RNA.
mesh_terms: D002874:Chromosome Mapping; D002875:Chromosomes; D003090:Coliphages; D004247:DNA; D004926:Escherichia coli; D008854:Microscopy, Electron; D008961:Models, Structural; D008970:Molecular Weight; D009693:Nucleic Acid Hybridization; D012333:RNA, Messenger
chemical_list: D012333:RNA, Messenger; D004247:DNA