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  • Title: [ABO and Rh blood groups and serum proteins in an Amerindian population of Matambú, Costa Rica].
    Author: Barrantes R, Azofeifa J, Mata L.
    Journal: Rev Biol Trop; 1985 Jun; 33(1):13-6. PubMed ID: 3939739.
    Abstract:
    Genetic structure of the population of Matambú, Costa Rica, was investigated using 6 genetic markers: ABO and Rh blood groups, and 4 serum proteins: albumin, ceruloplasmin, haptoglobin and transferrin. All the individuals were Rh+ and the I degrees allele had a high frequency (0.89). There are 4 polymorphic alleles in ceruloplasmin, including a possible new variant (3.8%). Transferrin Dchi had a remarkably high frequency (0.11). These results indicate that this group is of Amerindian origin although there are Caucasic and Negroid genes present. The genetic constitution of Matambú differs from that of the other Amerindian groups such as the Guaymí, from Chibcha stock, which supports the hypothesis of a Mesoamerican origin.
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