 SAN DIEGO, March 29, 2021 GLOBE NEWSWIRE -- Exagen Inc. Nasdaq: XGN, an organization dedicated to transforming the care continuum for patients suffering from autoimmune diseases, announced today that it will collaborate with Emory University on a new study about the long-term effects of COVID-19 infection in the development of autoimmune diseases. Emory is widely acknowledged as a leading research institution in the study of various autoimmune diseases, including lupus. 