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CD200R1L is evolutionary conserved and is evolving faster than CD200R . (A) A summarized phylogenetic tree based on analysis of 128 sequences from 57 species (see Supplementary Table 1 for sequence reference). Sequence alignments were made using MAFFT software, and the phylogeny was made using RAxML software. (see Supplementary Fig. S4 for extended tree). (B) Primate tree branch lengths of CD200R and CD200R1L is depicted
