title: Studies of DNA replication in vivo, II. Evidence for the second intermediate.
mesh_terms: D001412:Bacillus subtilis; D002247:Carbon Isotopes; D002482:Cellulose / Q000494:pharmacology; D002499:Centrifugation, Density Gradient; D002845:Chromatography; D004261:DNA Replication; D013936:Thymidine; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D014316:Tritium; D002482:Cellulose; D013936:Thymidine