Host resistance to gastric adenocarcinomatosis in three strains of rats ingesting N-methyl-N'-nitro-N-nitrosoguanidine.

N-methyl-N'-nitro-N-nitrosoguanidine (NG) in drinking water (83 mg/l) results in a high incidence of gastric adenocarcinoma in random-bred Wistar rats. When NG was discontinued after 25 weeks, 61% of