a positive correlation was found between the amount of nitrosamines in gastric juice and the degree of severity of lesions of the oesophageal epithelium : the amounts of nitrosamines in gastric juice from subjects with a normal oesophageal epithelium were lower than those in subjects with marked dysplasia or carcinoma of the oesophagus .
C1179544
oesophageal epithelium
C0152018
carcinoma of the oesophagus