[Immune mechanism of the digestive system].
D001402:B-Lymphocytes / Q000276:immunology; D004064:Digestive System / Q000276:immunology*; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis; D009092:Mucous Membrane / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology
D007136:Immunoglobulins