title: Detection of size heterogeneity in the supercoiled fraction of Polyoma virus DNA.
mesh_terms: D000362:Agar; D000468:Alkalies; D002499:Centrifugation, Density Gradient; D002501:Centrifugation, Zonal; D004279:DNA, Viral / Q000032:analysis*; D004586:Electrophoresis; D005782:Gels; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D008970:Molecular Weight; D009691:Nucleic Acid Denaturation; D010456:Peptides, Cyclic / Q000032:analysis; D010759:Phosphorus Isotopes; D011120:Polyomavirus / Q000032:analysis*; D011402:Pronase; D014316:Tritium; D014357:Trypsin
chemical_list: D000468:Alkalies; D004279:DNA, Viral; D005782:Gels; D010456:Peptides, Cyclic; D010759:Phosphorus Isotopes; D014316:Tritium; D000362:Agar; D014357:Trypsin; D011402:Pronase