| levels of direct-acting mutagens, total n-nitroso compounds in nitrosated fermented fish products, consumed in a high-risk area for gastric cancer in southern china. | a high gastric cancer mortality in fujian province (peoples republic of china) has been associated with the consumption of certain salted fermented fish products such as fish sauce (fs). we have investigated the levels and nature of n-nitroso compounds (noc) and genotoxins present, before and after nitrosation, in 49 fs samples collected from villages in this high-risk area, pooled into six samples. the concentrations of total noc before nitrosation ranged from 0.2 to 16 mumoles/l, and after nit ... | 1992 | 1370720 |