Dean Steven Gabbe, left, and Dr. Jacek Hawiger congratulate Dr. Diane Mathis, the recent 2002 Boehringer-Ingelheim Distinguished Lecturer in Biomedical Sciences. Mathis, professor of Medicine at Harvard and Head of the Section on Immunology and Immunogenetics at the Joslin Diabetes Center, delivered two lectures and met with the faculty, fellows, and students in a series of meetings organized by the Department of Microbiology and Immunology. (photo by Dana Johnson)