title: Lymphoid tissues of "lethargic" mice.
mesh_terms: D000818:Animals; D001345:Autoradiography; D004912:Erythrocytes / Q000276:immunology; D008198:Lymph Nodes / Q000276:immunology; D008221:Lymphoid Tissue / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D009154:Mutation; D010581:Peyer's Patches / Q000276:immunology; D012756:Sheep; D013154:Spleen / Q000276:immunology / Q000378:metabolism; D013936:Thymidine / Q000378:metabolism; D013950:Thymus Gland / Q000378:metabolism
chemical_list: D013936:Thymidine