Studies on the Blood-Group Substances in Secretions of Domestic Animals:Studies on the Blood-Group Substances in Secretions of Domestic Animals

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In the previous paper it was reported that the blood cells of goat could be classified by two agglutinogens, G1 and G2, and two hemolysinogens, Y1 and Y2, contained in them. The present experiments were performed to clarify the existence and conditions of secretion of G1 and G2 antigens in goat saliva and milk by agglutination-inhition tests. The following results were obtained.1) In some goats G1 and G2 antigenic substances were secreted in their saliva and milk, but in others they were not. So, goat saliva and milk may be classified into two types, secretor and nonsecretor.2) When the frequencies of appearance of G1 and G2 antigens in the saliva were examined 75 cases of G1 blood type contained 48 cases (64%) of secretor type and 27 cases (36%) of nonsecretor type, and 12 cases of G2 blood type, one case (8.3%) of secretor and 11 cases (91.7 %) of nonsecretor type. When the milk was examined, 25 cases of G1 blood type included 18 cases (72%) and 7 cases (28%) of secretor and nonsecretor type, respectively, and one case of G2 blood type was of secretor type.3) G1 or G2 antigen was secreted in both saliva and milk in 7 cases (28%) of the 25, only in the saliva in 3 cases (12%), only in the milk in 11 cases (44%), and in neither saliva nor milk in 4 cases (16%).
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