AUTHOR=Hafler David A. , Astier Anne L. TITLE=Editorial: T Cell Regulation by the Environment JOURNAL=Frontiers in Immunology VOLUME=6 YEAR=2015 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2015.00229 DOI=10.3389/fimmu.2015.00229 ISSN=1664-3224