title: Is there impaired immunity in patients with Crohn's disease?
mesh_terms: D003424:Crohn Disease / Q000276:immunology*; D006801:Humans; D007111:Immunity, Cellular; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G