Alignment of predicted amino acid sequences of six MHC class IIB alleles from three haplotypes.

<p>Duck (Anpl-IIb) and chicken (Gaga-BLB1) amino acid sequences are provided for reference. The first amino acid of the β1 domain was designated as position 1. Identity with the <i>Nini-DAB1*01</i> sequence is indicated with a dot. Gaps are indicated by dashes. Asterisks above the sequence of the β1 domain indicate peptide-binding residues <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0108506#pone.0108506-Brown1" target="_blank">[40]</a>.