James J. Moon Assistant Professor of Medicine CD4+ T cell Tolerance CD4+ T lymphocytes comprise a principal component of the adaptive immune system. These cells recognize processed antigens... Read more about James J. MoonLab WebsitePublicationsCenter for Immunology and Inflammatory Diseases Pulmonary and Critical Care Unit Massachusetts General Hospital Harvard Medical School 149 13th Street, Room 6-221 Charlestown, MA 02129jjmoon@mgh.harvard.edup: 617-726-4161