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  • Title: Properdin factor B polymorphism in Black Americans.
    Author: Budowle B, Go RC, Barger BO, Acton RT.
    Journal: J Immunogenet; 1981 Dec; 8(6):519-21. PubMed ID: 6916776.
    Abstract:
    Properdin factor B is a genetically-controlled polymorphism that can be demonstrated by agarose gel electrophoresis. The Bf gene frequencies were determined for 194 blacks from the south-eastern United States. The frequencies for Bf-F, Bf-S, Bf-F1, and Bf-S1 are 0.626, 0.034, and 0.013, respectively. The south-eastern blacks have similar Bf frequencies to the South African blacks; however, both these groups are different from blacks from Boston. The frequency differences between south-eastern blacks and Boston blacks may be due to racial admixture differences found in the two populations.
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