
Comparison of KIR haplotypes in three primates (not to scale): rhesus macaque (1), common chimpanzee (2), human haplotype type A (3), and human haplotype type B (4). KIR lineages have been color-coded. Genes that are found in common between the three species have corresponding gene box borders. Only the extracellular immunoglobulin domains of ptKIRnewI are related to human KIR3DL3. PtKIR3DL1/2 shares common features with both human KIR3DL1 and KIR3DL2. Flanking framework genes surrounding the KIR loci are shown in dark gray.











