Since the animal's blood type was studied by Dolter in 1925, many works have been done on it also in Japan and studies on the blood type of dog were reported by Iseki in 1940.
In our present experiment of the dog blood type the following four points were observed:
1) The sera type of dog could be divided into 4 groups, α′ (22%), β′ (18.4%), α′β′ (35.2%) and O′ type (22.4%).
2) Based upon the partial antigenicity, dog blood cell was found to react with human antisera; 1.51per cent with anti A, 11.49per cent with anti B, 63.22per cent with both anti A and B and 23.78per cent with none of these antisera.
3) The cross-matching test of dog blood did not develop any sufficient classification, but some natural antibodies were proved.
4) Analysed by the antigenicity of dog blood cell, 4 types were grouped: DI (3.67%), DII (25.69%), DI, DII (31.19%) and X type (39.45%).
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