studies were made on the carcinogenic activity of butylated hydroxyanisole ( bha ) in rats , mice , and hamsters and the effect of the antioxidants bha , butylated hydroxytoluene ( bht ) , ethoxyquin ( eq ) , sodium l-ascorbate ( sa ) , ascorbic acid ( aa ) , sodium erythorbate ( se ) , propyl gallate ( pg ) , and alpha-tocopherol , on two-stage chemical carcinogenesis in rats initiated with n-methyl-n'-nitro-n-nitrosoguanidine ( mnng ) , 1,2-dimethylhydrazine ( dmh ) , diethylnitrosamine ( den ) , 7,12-dimethylbenz ( a ) anthracene ( dmba ) , n-butyl-n- ( 4-hydroxybutyl ) nitrosamine ( bbn ) , n-ethyl-n-hydroxyethylnitrosamine ( ehen ) , or n-methylnitrosourea ( mnu ) .
C0012200
diethylnitrosamine
C0028197
nitrosamine