Comparative genome map of the HLA and Mafa regions. The number of Mafa-A, Mafa-B, and Mafa-DRB loci varies from one haplotype to another (Mafa-A from 1 to 3 loci, Mafa-B/I from 2 to 9, Mafa-DRB from 2 to 4). The numbers below the boxes indicate the number of alleles based on the IPD-IMGT/HLA version 3.35 and IPD-MHC version 3.2.0.0 database. The numbers of Mafa-A, Mafa-B and Mafa-DRB alleles correspond to the allele numbers of all Mafa-A loci (Mafa-A1 to -A6 and Mafa-A8), all Mafa-B loci (Mafa-B, -B11L -B12, -B16, -B17, -B20 and -B21), as well as all Mafa-DRB loci (Mafa-DRB*W, -DRB1, -DRB3, -DRB4, -DRB5 and -DRB6). For more details on allele numbers, see Table 1.