AUTHOR=Kisielow Paweł TITLE=Demonstration of Functional Heterogeneity of T lymphocytes and Identification of Their Two Major Subsets JOURNAL=Frontiers in Immunology VOLUME=5 YEAR=2014 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2014.00609 DOI=10.3389/fimmu.2014.00609 ISSN=1664-3224