Percent identity plot calculated by PipMaker (see Methods) for the human interval of IL-17R to MIL1 compared with the sequence of the region of conserved synteny from mouse chromosome 6. Gap-free segments demonstrating >50% nucleotide identity are indicated by horizontal black bars below the graphical depictions of interspersed repeats, CpG islands, and gene structures. Exons are numbered from the 5′-most cloned exon. A single gap-free alignment underneath a protein-coding exon indicates the mouse exon size is conserved, and thus the mouse locus maintains a homologous ORF.