title: Supercoiling of polyoma virus DNA measured by its interaction with ethidium bromide.
mesh_terms: D000890:Anti-Infective Agents; D001965:Bromides; D055598:Chemical Phenomena; D002621:Chemistry; D004279:DNA, Viral; D003720:Densitometry; D011120:Polyomavirus; D013053:Spectrophotometry; D014461:Ultracentrifugation
chemical_list: D000890:Anti-Infective Agents; D001965:Bromides; D004279:DNA, Viral