Oral encounters with antigen.
D000328:Adult; D000818:Animals; D000917:Antibody Formation; D000936:Antigen-Antibody Complex / Q000276:immunology; D000941:Antigens / Q000008:administration & dosage / Q000276:immunology*; D006801:Humans; D007108:Immune Tolerance; D007114:Immunization; D007074:Immunoglobulin G / Q000032:analysis; D007223:Infant; D007422:Intestines / Q000276:immunology*; D051379:Mice; D008892:Milk / Q000276:immunology; D010047:Ovalbumin / Q000276:immunology
D000936:Antigen-Antibody Complex; D000941:Antigens; D007074:Immunoglobulin G; D010047:Ovalbumin