title: The validity of autoradiographic labeling.
mesh_terms: D000818:Animals; D001345:Autoradiography; D008214:Lymphocytes / Q000166:cytology; D008722:Methods; D051381:Rats; D012834:Silver; D013223:Statistics as Topic; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D014316:Tritium; D012834:Silver; D013936:Thymidine