Relative locations of the three studied SNPs and <i>HLA-DPA1</i> and <i>HLA-DPB1</i> genes on chromosome 6.

<p>The names of the three SNPs are shown on top, and the chromosomal positions on chromosome 6 are marked in the ruler in the middle. The <i>HLA-DPA1</i> and <i>HLA-DPB1</i> genes are shown as arrows in the bottom, with the exons shown as black boxes, introns as white boxes, and un-translated regions as gray boxes/arrows.