AUTHOR=Van Bergen Jeroen , Trowsdale John TITLE=Ligand specificity of Killer cell Immunoglobulin-like Receptors: a brief history of KIR JOURNAL=Frontiers in Immunology VOLUME=3 YEAR=2012 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2012.00394 DOI=10.3389/fimmu.2012.00394 ISSN=1664-3224