Ordered replication of DNA in polytene chromosomes of Drosophila melanogaster.
D001345:Autoradiography; D002874:Chromosome Mapping; D002875:Chromosomes; D004247:DNA / Q000096:biosynthesis*; D004330:Drosophila; D012469:Salivary Glands; D013936:Thymidine / Q000378:metabolism; D014316:Tritium / Q000032:analysis
D014316:Tritium; D004247:DNA; D013936:Thymidine