title: Severe combined immunodeficiency associated with absent T4+ helper cells.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000276:immunology* / Q000473:pathology; D003587:Cytomegalovirus / Q000302:isolation & purification; D003586:Cytomegalovirus Infections / Q000276:immunology / Q000473:pathology; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000151:congenital*; D007223:Infant; D008231:Lymphopenia / Q000276:immunology*; D008297:Male; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology* / Q000473:pathology; D050378:T-Lymphocytes, Regulatory / Q000276:immunology / Q000473:pathology