Figure 1
From: The importance of immune gene variability (MHC) in evolutionary ecology and conservation
Differences between the rates of non-synonymous (dn) and synonymous (ds) substitutions (= dn-ds, amino acid sequence-changing substitution rate) in antigen-binding sites (ABS, shaded bars) and nonantigen-binding sites (nonABS, black bars) of MHC class II DRB exon 2 alleles of the species included in Table 2. Abbreviations follow the MHC nomenclature [42], the first two letters of the genus and the species name are used.