title: Small polydisperse circular DNA of HeLa cells.
mesh_terms: D001483:Base Sequence; D002467:Cell Nucleus / Q000032:analysis; D002499:Centrifugation, Density Gradient; D003513:Cycloheximide / Q000494:pharmacology; D004247:DNA / Q000032:analysis*; D003720:Densitometry; D006367:HeLa Cells / Q000032:analysis* / Q000187:drug effects; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008854:Microscopy, Electron; D008928:Mitochondria / Q000032:analysis; D008970:Molecular Weight; D009690:Nucleic Acid Conformation; D014316:Tritium
chemical_list: D014316:Tritium; D004247:DNA; D003513:Cycloheximide