Distribution of hereditary factors in the blood of Indians of the Gila River, Arizona.

This paper reports the distribution of blood groups, A-B-H secretors, haptoglobins, transferrins and hemoglobin types among Indians of the Gila River Valley in Arizona. 1,304 samples were tested for factors in the A-B-O, M-N-S-s, P, Rh-Hr, Lutheran, Kell-Cellano, Lewis, Duffy, Kidd and Diego blood group systems, and for additional blood factors. The results of this study suggests that the Papago tribe presents fewer genes of non-Indian origin than the Pima, and the Maricopa least of the three populations.