AUTHOR=Robert Philippe A. TITLE=Commentary: “Can Selective MHC Downregulation Explain the Specificity and Genetic Diversity of NK Cell Receptors?” JOURNAL=Frontiers in Immunology VOLUME=6 YEAR=2015 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2015.00444 DOI=10.3389/fimmu.2015.00444 ISSN=1664-3224