Cutbush, Marie, Mollison, P L, and Parkin, Dorothy M. 1950. A new human blood group. Nature, 165, 188. Article Google Scholar Holt, Helene A, Thompson, Joan S, Sanger ...
The blood group A subtypes of a Caucasian and a Negro population of Virginia were investigated, utilizing a standardized immunohemolytic system and lectins for quantitation of antigenic reactivity.