a positive correlation was found between the amount of n-nitrosamines in gastric juice and the various lesions in the esophageal epithelium of the subjects , the amount of n-nitrosamines in gastric juice from subjects with normal esophageal epithelium was lower than that from subjects with marked dysplasia or carcinoma of esophagus .
C1179544
esophageal
C0152018
carcinoma