title: Twisted circular DNA: sedimentation coefficients and the number of twists.
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003090:Coliphages; D004279:DNA, Viral; D066298:In Vitro Techniques; D027383:Papillomaviridae; D011120:Polyomavirus; D013539:Simian virus 40
chemical_list: D004279:DNA, Viral