title: Age-and maturation-dependent changes in the immune system of Fischer F344 rats.
mesh_terms: D000375:Aging; D000818:Animals; D002478:Cells, Cultured; D004305:Dose-Response Relationship, Drug; D007109:Immunity; D007700:Kinetics; D008070:Lipopolysaccharides / Q000494:pharmacology; D008214:Lymphocytes / Q000187:drug effects; D008297:Male; D009929:Organ Size; D010835:Phytohemagglutinins / Q000494:pharmacology; D051381:Rats; D011916:Rats, Inbred F344 / Q000276:immunology*; D011919:Rats, Inbred Strains / Q000276:immunology*; D013154:Spleen / Q000276:immunology; D013950:Thymus Gland / Q000276:immunology
chemical_list: D008070:Lipopolysaccharides; D010835:Phytohemagglutinins