title: Decline in phytohemagglutinin responsiveness of spleen cells from aging mice.
mesh_terms: D000375:Aging; D000818:Animals; D002478:Cells, Cultured; D003601:Cytotoxicity Tests, Immunologic; D004247:DNA / Q000096:biosynthesis; D005260:Female; D006824:Hybridization, Genetic; D037102:Lectins / Q000494:pharmacology*; D008213:Lymphocyte Activation / Q000187:drug effects*; D008297:Male; D051379:Mice; D008809:Mice, Inbred C3H; D008810:Mice, Inbred C57BL; D013154:Spleen / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology* / Q000378:metabolism; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D037102:Lectins; D014316:Tritium; D004247:DNA; D013936:Thymidine