Fig. 2
From: 100 million years of multigene family evolution: origin and evolution of the avian MHC class IIB
Phylogenetic relationships of MHCIIB exon 3 sequences (first 220 bp). The two monophyletic clusters comprising sequences with predominantly DAB1 signature or DAB2 signature are shown in green and blue, respectively. Grey colored branches lead to sequences from pelecaniform and phoenicopteriform species with strongly intermingled lineage signatures. Sequence clusters with sequences from the same order have been collapsed for reasons of readability. A fully resolved topology is provided in Additional file 1. Symbols represent Bayesian posterior probabilities of the resolved-consensus tree: asterisks, ≥0.95; circles, 0.8–0.9; triangles, 0.5–0.8