title: Familial lymphopenia with T lymphocyte defect.
mesh_terms: D000328:Adult; D001402:B-Lymphocytes / Q000276:immunology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007111:Immunity, Cellular; D007153:Immunologic Deficiency Syndromes / Q000097:blood / Q000150:complications* / Q000235:genetics / Q000276:immunology; D008213:Lymphocyte Activation; D007959:Lymphocyte Culture Test, Mixed; D008231:Lymphopenia / Q000150:complications / Q000235:genetics* / Q000276:immunology; D008297:Male; D012882:Skin Tests; D013601:T-Lymphocytes / Q000276:immunology*