Jennifer Lynn Gommerman is a Canadian immunologist. She is a Tier 1 Canada Research Chair in Tissue-Specific Immunity at the University of Toronto. Gommerman has been examining the role of B lymphocytes in Multiple Sclerosis patients and in animal models of MS. She also studies the antibody response to SARS-CoV-2 in saliva samples from patients with COVID-19. Early life and education Gommerman was born in Winnipeg, Manitoba but her family moved to Burlington, Ontario when she was 10 years old. Growing up in Burlington, she attended Ecole St. Philippe and then Lester B. Pearson High School before enrolling at the University of Toronto (U of T). She subsequently earned her Bachelor of Science degree and Ph.D. in immunology at U of T before completing a post-doctoral fellowship at Harvard Medical School. Career Following her post-doctoral fellowship, Gommerman became a staff scientist at Biogen Inc for three years before returning to U of T in 2003 as an assistant professor of immunology. She intended to continue her work with multiple sclerosis (MS) but eventually broadened her research to include the impact of the mucosal immune system in the gut on diseases such as MS. In 2007, Gommerman received an Early Researcher Award to support her efforts in uncovering the basic set of biological events common to MS and other chronic diseases. In 2014, Gommerman began investigating chronic inflammatory diseases in South Asian immigrants raised in Canada using funding from the Global Challenge Prize. Her research project was entitled the GEMINI Study (Generational differences in Environmental exposures caused by Human Migration: Impact on Incidence of Inflammatory Disease). At the same time, she also assumed the role of graduate coordinator and was promoted to the rank of full professor. As a full professor, Gommerman continued examining the role of B lymphocytes in Multiple Sclerosis patients. In 2019, in collaborating with researchers at UC San Francisco, Gommerman discovered that the intestine is the source of immune cells that reduce brain inflammation in people with multiple sclerosis. As such, increasing the number of these cells blocks inflammation entirely in a preclinical model of the disease. She also began using non-traditional methods to detect dozens of proteins in a single tissue section. She used imaging mass cytometry to study the immune cells found in brain lesions of MS patients. In 2020, Gommerman and her post-doctoral researcher Conglei Li discovered that in utero inhibition of molecular signalling