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Amino acid alignment of the exon 2 of full-length Nini-IIβ sequences. Dots indicate identity to DAB*01. Crosses represent putative antigen binding sites (ABS) inferred from Jardetzky, et al. [60] and Stern, et al. [61]. “a” and “b” denote sites under positive selection for DAB and DBBs, respectively, as estimated by omegaMap.
