in a series of extensive studies on gastric carcinogenesis , we have used sprague-dawley rats to examine the morphologic , histochemical , and biochemical effects of risk and protective factors on n-methyl-n'-nitro-n-nitroso guanidine ( mnng ) -induced tumors in an attempt to link early observations with the end-point lesion , gastric cancer .
C0038351
gastric
C0024623
gastric cancer