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. 2020 Nov 6;11:584950. doi: 10.3389/fimmu.2020.584950

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Copyright © 2020 Nunes, Aguiar, Silva, Sena, de Oliveira, Dinardo, Kehdy, Tarazona-Santos, Rocha, Carneiro-Proietti, Loureiro, Flor-Park, Maximo, Kelly, Custer, Weir, Sabino, Porto and Meyer

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Mean frequency of Brazilian Institute of Geography and Statistics (IBGE) category of the potential donors for individuals in different IBGE categories, African ancestry quartiles, or with different numbers of chromosomes with African MHC. For each individual we calculate the average IBGE category of his/her potential donors, then for each category or genetic ancestry group we computed the group-level average (average of individual averages). Individuals who are “Black” or have more African genetic ancestry find proportionately more donors in the same category/ancestry.