title: Application of the differential reactivity to human X-chromosomes.
mesh_terms: D001345:Autoradiography; D003080:Cold Temperature; D005260:Female; D006801:Humans; D007621:Karyotyping; D007962:Leukocytes / Q000166:cytology; D008297:Male; D012730:Sex Chromosomes; D013936:Thymidine; D014316:Tritium
chemical_list: D014316:Tritium; D013936:Thymidine