S-12 Frontier Research in Drug Discovery and Delivery by Utilizing Diverse Abilities of the Intestinal Membranes S12-1 A strategy to avoid intestinal first pass metabolism and drug-drug interactions      S12-2 Molecular mechanism behind the barrier function of tight junctions      S12-3 Drug nanoparticle formation by co-grinding and the effect on intestinal absorption      S12-4 Development of drug delivery system with microspheres targeting intestinal immune cells for inflammatory bowel disease      S12-5 Gut immune system for the development of mucosal vaccine and immunotherapy       S12-6 Manipulation of intestinal influx transporters which are responsible for glucose absorption by polymer conjugates bearing glucose moieties