title: Subpopulations within "short-lived" and "long-lived" lymphocytes resolved by isopycnic sedimentation in Ficoll solutions coupled with a double radioisotopic labeling technique.
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells; D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D008198:Lymph Nodes; D008214:Lymphocytes / Q000378:metabolism; D008297:Male; D008722:Methods; D051381:Rats; D013154:Spleen; D013936:Thymidine / Q000378:metabolism; D013950:Thymus Gland; D013997:Time Factors; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D014316:Tritium; D013936:Thymidine