title: Marrow colony-forming units: age-related changes in responses to anti-theta-sensitive helper/suppressor stimuli.
mesh_terms: D000375:Aging; D000818:Animals; D001853:Bone Marrow / Q000276:immunology*; D003114:Colony-Forming Units Assay; D003165:Complement System Proteins / Q000276:immunology; D005260:Female; D008214:Lymphocytes / Q000276:immunology; D008297:Male; D051379:Mice; D013154:Spleen / Q000166:cytology; D013601:T-Lymphocytes / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*
chemical_list: D003165:Complement System Proteins