title: The evolution of new species of viral DNA during serial passage of simian virus 40 at high multiplicity.
mesh_terms: D000818:Animals; D001345:Autoradiography; D002460:Cell Line; D002478:Cells, Cultured; D002499:Centrifugation, Density Gradient; D004247:DNA / Q000032:analysis; D004270:DNA, Circular / Q000032:analysis; D004279:DNA, Viral / Q000032:analysis* / Q000302:isolation & purification; D004591:Electrophoresis, Polyacrylamide Gel; D004720:Endonucleases; D005796:Genes; D006193:Haemophilus influenzae / Q000201:enzymology; D000882:Haplorhini; D007668:Kidney; D008970:Molecular Weight; D009693:Nucleic Acid Hybridization; D010759:Phosphorus Isotopes; D013539:Simian virus 40 / Q000032:analysis* / Q000254:growth & development; D014316:Tritium
chemical_list: D004270:DNA, Circular; D004279:DNA, Viral; D010759:Phosphorus Isotopes; D014316:Tritium; D004247:DNA; D004720:Endonucleases