title: Structure of the replicative form of bacteriophage phi X174. V. Interconversions between twisted, extended and randomly coiled forms of cyclic DNA.
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003090:Coliphages; D004279:DNA, Viral; D003851:Deoxyribonucleases; D004926:Escherichia coli; D008854:Microscopy, Electron; D009691:Nucleic Acid Denaturation; D014461:Ultracentrifugation; D014779:Virus Replication
chemical_list: D004279:DNA, Viral; D003851:Deoxyribonucleases