Institute of Laser and Optoelectronics Technology Fujian Provincial Key Laboratory for Photonics Technology Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministryof Education Fujian Normal University 350007.R.China;
Department of Pathology The Afiliated Union Hospital Fujian Medical University 350001.R.China;
Department of Colorectal Surgery The Afflhiated Union Hospital Fujian Medical University 350001.R.China;
Normal colonic mucosa; hyperplastic polyps; tubular adenoma;