A quantitative study of the ABH red cell antigens in the Kulamwo of Ivory Coast

The agglutination percentages given by various erythrocytes with reference sera have been compared in blood samples from Kulamwos living in the Ivory Coast and of blood donors of the regional transfusion centre of Toulouse. The study of O, A, B and AB phenotypes shows: 1. in O Kulamwos a higher agglutination percentage with anti-H than in Toulousains; 2. in B Kulamwos a higher agglutination percentage with anti-B than in Toulousains; 3. in A Kulamwos a very marked frequency of A intermediate which can be classified in different categories due to the variability of their agglutination percentage with anti-A1 and anti-H sera.