title: Letter: Cellular proliferation as an index of immune competence.
mesh_terms: D002455:Cell Division; D005333:Fetus; D006801:Humans; D007111:Immunity, Cellular; D007668:Kidney / Q000473:pathology; D008099:Liver / Q000166:cytology; D008213:Lymphocyte Activation; D007959:Lymphocyte Culture Test, Mixed; D008214:Lymphocytes / Q000276:immunology*; D013154:Spleen / Q000166:cytology; D013950:Thymus Gland / Q000166:cytology