Daniel Littman, MD, PhD Helen L. and Martin S. Kimmel Professor of Molecular Immunology, New York University Biography Dr. Littman is the Helen L. and Martin S. Kimmel Professor of Molecular Immunology in the Department of Pathology and a Professor in the Department of Microbiology at New York University. His laboratory investigates how T lymphocytes acquire functional properties during development in the thymus and upon receiving signals initiated by distinct commensal microbes in the intestine. These studies are aimed at better understanding how alterations in the intestinal microbiota influence systemic inflammatory processes, such as T cell-mediated autoimmune diseases and responses to infection with HIV and other pathogenic microbes.