title: The demonstration and function of antibodies in the gastrointestinal tract.
mesh_terms: D000818:Animals; D000906:Antibodies; D000936:Antigen-Antibody Complex / Q000302:isolation & purification; D000941:Antigens; D001323:Autoantibodies; D003126:Colostrum / Q000276:immunology; D003168:Complement Fixation Tests; D004064:Digestive System / Q000276:immunology*; D004926:Escherichia coli / Q000276:immunology; D006801:Humans; D007106:Immune Sera; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007136:Immunoglobulins; D007422:Intestines / Q000276:immunology; D008970:Molecular Weight; D010434:Pepsin A; D017955:Poliovirus / Q000276:immunology; D011863:Radioimmunoassay; D014357:Trypsin
chemical_list: D000906:Antibodies; D000936:Antigen-Antibody Complex; D000941:Antigens; D001323:Autoantibodies; D007106:Immune Sera; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007136:Immunoglobulins; D014357:Trypsin; D010434:Pepsin A