Jean Marshall is a driving force in the immunology research community, internationally recognized for her major research contributions to the study of mast cells, allergy and inflammation, and an outstanding mentor of research trainees and junior faculty. She has served as President of the Canadian Society for Immunology, and has provided expertise to many national and international funding organizations, foundations and institutions. Dr. Marshall has received major career awards from leading immunology and allergy organisations. She has initiated and led innovative and productive multidisciplinary and multinational research teams, and is a role model for effective and collaborative leadership.