title: Hypergammaglobulinemia in histiocytosis X.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D006388:Hemagglutinins / Q000032:analysis; D006646:Histiocytosis, Langerhans-Cell / Q000150:complications / Q000276:immunology*; D006801:Humans; D006942:Hypergammaglobulinemia / Q000209:etiology*; D007075:Immunoglobulin M / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis; D007223:Infant; D007231:Infant, Newborn; D008213:Lymphocyte Activation
chemical_list: D006388:Hemagglutinins; D007075:Immunoglobulin M; D007136:Immunoglobulins