Fig. 2From: Polymorphism of MHC class IIB in an acheilognathid species, Rhodeus sinensis shaped by historical selection and recombinationThe comparison of nonsynonymous substitution rate (dN) among major exonal domains (a), between non-PBR and PBR in Rhsi-DAB1 (b) and between non-PBR and PBR in Rhsi-DAB3 (c)Back to article page