title: Clinical, immunological and histopathological evidence for thymic deficiency in Down's syndrome (mongolism).
mesh_terms: D004314:Down Syndrome / Q000150:complications / Q000276:immunology / Q000473:pathology*; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000150:complications; D007223:Infant; D007231:Infant, Newborn; D008231:Lymphopenia; D013154:Spleen / Q000473:pathology; D013601:T-Lymphocytes; D013950:Thymus Gland / Q000473:pathology*