Table 2.

Mean Nucleotide Diversity of Multiple Haplotype Comparisons within the Class I Region of the MHC (β Block)

Regions[i]
i ii iii iv v
AHs[ii] 44.157.18.1AHs44.157.162.1AHs44.162.1AHs44.157.1AHs44.157.18.1
Mean nucleotide  diversity (%)44.144.144.144.144.1
57.10.1857.10.1357.10.5857.11.64
8.10.130.268.11.071.67
62.10.080.230.1562.11.071.1462.10.2962.10.310.43
18.20.730.81.377.10.460.497.11.071.740.25
Number of sites12263137151337248476953
Total number of  polymorphic sites402138232161
Level of nucleotide  diversityLowHighMediumMediumHigh

[i] Regions i–v correspond to Figure 1.

[ii] Ancestral haplotypes taken from Degli-Esposti et al. (1992).

[iii] The HLA alleles for the MHC ancestral haplotypes are as follows: 57.1 (HLA-A1; B57; DR7), 7.1 (HLA–A3; B7; DR15), 8.1 (HLA-A1; B8; DR3), 18.2 (HLA–A30; B18; DR3).

[iv] The Mann, Boleth, and CGM1 cell lines have been designated the MHC AHs 44.1, 62.1, 8.1 (one chromosome of the CGM1 cell line appears to contain the β block of the 8.1 AH), respectively.