Fig. 4
From: Selection and demography drive range-wide patterns of MHC-DRB variation in mule deer
Variation in amino acids for MHC class II DRB exon 2. Amino acid sites corresponding to human HLA-DRB antigen binding sites are shown in red. Positively selected sites using PAML model M8 are denoted by asterisks (*p < 0.05 and **p < 0.01)