title: Thymic involution and ageing: a hypothesis.
mesh_terms: D000375:Aging; D000818:Animals; D001774:Blood Chemical Analysis; D001835:Body Weight; D004912:Erythrocytes / Q000276:immunology; D006460:Hemolysin Proteins; D006462:Hemolytic Plaque Technique; D007106:Immune Sera; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M; D051379:Mice; D008815:Mice, Inbred Strains; D009929:Organ Size; D012756:Sheep / Q000276:immunology; D013154:Spleen / Q000473:pathology; D013950:Thymus Gland / Q000276:immunology* / Q000637:transplantation; D013997:Time Factors; D014184:Transplantation, Homologous
chemical_list: D006460:Hemolysin Proteins; D007106:Immune Sera; D007074:Immunoglobulin G; D007075:Immunoglobulin M