A modifying effect of carotenoids on carcinogenesis induced by N-methyl-H'-nitro-N-nitrosoguanidine (MNNG) in the rumen was studied in four groups of rats weighing 100-120 g. A diet of the first group contained a highly carotenoid complex from wild rose fruits at a dose of 30 mg/kg 3 times weekly;
The effect of natural carotenoids on gastric carcinogenesis induced by N-methyl-N'-nitro-N-nitroguanidine (MNNG) was studied in 4 groups containing 105 rats. Highly carotenoid complex from wild rose fruits was added to drinking water of Group 1 (30 rats) at a dose of 15 mg/kg (as calculated per