title: Improving measurements of the relative times of synthesis of specific DNA fractions.
mesh_terms: D000818:Animals; D002455:Cell Division; D004247:DNA / Q000096:biosynthesis*; D004261:DNA Replication; D008433:Mathematics; D051379:Mice; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D014316:Tritium; D004247:DNA; D013936:Thymidine