title: [A case of Crohn's disease associated with selective IgM deficiency].
mesh_terms: D003424:Crohn Disease / Q000209:etiology* / Q000276:immunology; D004406:Dysgammaglobulinemia / Q000150:complications* / Q000209:etiology; D006801:Humans; D007075:Immunoglobulin M / Q000172:deficiency*; D008214:Lymphocytes / Q000276:immunology; D008297:Male; D008875:Middle Aged
chemical_list: D007075:Immunoglobulin M