This book is the proceedings of the Falk Symposium No. 127 on 'Autoimmune Diseases in Paediatric Gastroenterology' (IV International Falk Symposium on Paediatric Gastroenterology), held in Basel, Switzerland, on November 8-9, 2001. The symposium focused on the role of the immune system, both the acquired and the innate systems, in inflammatory bowel disease (IBD) in children and adolescents. The innate system has an important fundamental role in host...