Precpitation of a substance in salivas from A1 and A2 secretors.
D000017:ABO Blood-Group System / Q000032:analysis*; D000372:Agglutination Tests; D000941:Antigens / Q000032:analysis*; D001789:Blood Group Antigens; D005826:Genetics, Medical; D006801:Humans; D010936:Plant Extracts; D012463:Saliva / Q000276:immunology*
D000017:ABO Blood-Group System; D000941:Antigens; D001789:Blood Group Antigens; D010936:Plant Extracts