Fabio Grassi earned his degree in Medicine at the University of Pavia in 1985 and a Ph.D. in Microbiology at the University of Milan in 1993. He was a Anna Villa Rusconi fellow at the University of Umeä in Sweden (1988), post-doctoral fellow at the Institut Pasteur in Paris (1989-1993), assistant professor at San Raffaele Scientific Institute in Milan (1994-1998), Marie Curie fellow at Hôpital Necker in Paris (1998-2000) and Special Fellow of the Leukemia & Lymphoma Society at Dana Farber Cancer Institute, Harvard Medical School in Boston (2000-2002). He is full professor of Biology at the Medical School of the University of Milan. The research in the lab is focused on the purinergic control of T cell response. At the moment, particular efforts are dedicated to defining the role of extracellular ATP and P2X7 receptor in regulating mucosal adaptive response as well as mutualism with intestinal commensals.