Department of Laboratory Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China;
Department of Laboratory Medicine Central Hospital of Shengli Oil-Field Dongying 257034 China;
Department of Laboratory Medicine Central Hospital of Shengli Oil-Field Dongying 257034 China;
Department of Laboratory Medicine Qingdao Municipal Hospital Qingdao 266011 China;
Department of Laboratory Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China;
gastric carcinoma; precancerous lesions; apoptosis;