Fig. 2.

Phylogenetic relationship of osteoglycins (OGNs) in vertebrates. Phylogenetic analysis was performed using Bayesian inference and the tree built in MrBayes 3.2 and branch support values (posterior probability values) are shown for the major protein family clades. All other SLRP family members were used to root the tree. The accession number of all the sequences used in this phylogenetic tree are shown in Additional file 1