transitive (also absol.) to cause isoagglutination (of); chiefly in isoagglutinatingn. and adj.
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1904 Alienist & Neurologist XXV. 386 The serum from such blood was also isoagglutinating.
1910 Johns Hopkins Hosp. Bull.21 70/1 Human beings can be divided into four groups according to the ability of their serum to cause isoagglutination and of their corpuscles to be isoagglutinated.