title: The distribution of purine sequences in the ribonucleic acid of the bacteriophage MS2.
mesh_terms: D001435:Bacteriophages; D055598:Chemical Phenomena; D002621:Chemistry; D002845:Chromatography; D066298:In Vitro Techniques; D011687:Purines; D012367:RNA, Viral
chemical_list: D011687:Purines; D012367:RNA, Viral