title: Structural and functional alterations of the aging human thymus.
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging; D000945:Antigens, Differentiation, T-Lymphocyte; D000954:Antigens, Surface / Q000032:analysis; D002450:Cell Communication; D002454:Cell Differentiation; D002648:Child; D004847:Epithelial Cells; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II / Q000032:analysis; D006801:Humans; D007223:Infant; D008214:Lymphocytes / Q000166:cytology / Q000276:immunology; D008875:Middle Aged; D013601:T-Lymphocytes / Q000166:cytology* / Q000276:immunology; D013950:Thymus Gland / Q000166:cytology* / Q000502:physiology / Q000648:ultrastructure
chemical_list: D000945:Antigens, Differentiation, T-Lymphocyte; D000954:Antigens, Surface; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II