Human Model Simulation Human Colon Anatomy Model Anorectal Intestinal Gastrointestinal Digestive System Teaching Model45CM color spine with pelvic femoral model. Human colon lesion model Product Description. This colon lesion model, showing the colon and rectum of each bacterial intestinal YAN and glandular AI, including rest \ meat, intestinal condyloma die, intestinal tuberculosis and Crohn's disease, ulcerative colonic YAN, depicting the inflammation \ disease or nucleus of the colon \ nucleus. Made of imported environmentally friendly PVC, hand written color,