Carcinogenicity in mice of mutagenic compounds from glutamic acid and soybean globulin pyrolysates

2-Amino-6-methyldipyrido[1,2-a:3',2'-d]imidazole and 2- aminodipyrido [1,2-a:3',2'-d]imidazole, potent mutagens from glutamic acid pyrolysate, were given orally to CDF1 mice of both sexes at concentrations of 0.05% in pellet diet. 2-Amino-3-methyl-9H-pyrido[2,3-b]indole and 2-amino-9H-pyrido[2,3-b]indole, potent mutagens from soybean globulin pyrolysate, were given to CDF1 mice of both sexes at concentrations of 0.08%. Hepatocellular carcinomas and hemangioendothelial sarcomas in the brown adipose tissue were induced in high incidence by all these compounds.