Abstract: Using the detect technology of the ultraweak photon emission, the esophageal carcinoma ultraweak photon emission is measured.The relationship between the intensity of biophoton and proliferating cell nuclear antigen(PCNA) were acquired. The result shows that: biothotonic intensity of esophageal carcinoma is effected by the different cells density; The abnormalchange of PCNA and ultraweak photon emission play an important role in the development of esophageal carcinoma.

Key words: esophageal cells, biophoton emission, delayed luminescence, proliferating cell nuclear antigen(PCNA)