Oxidative Stress in the Pathogenesis of Crohn's Disease and the Interconnection with Immunological Response, Microbiota, External Environmental Factors, and Epigenetics A new therapy against ulcerative colitis via the intestine and brain using the Si based agent Scientific Reports Oxidative Stress in the Pathogenesis of Crohn's Disease and the Interconnection with Immunological Response, Microbiota, External Environmental Factors, and Epigenetics Identification of a Druggable Target That Predicts Postoperative Crohn's Disease Recurrence Gastroenterology