1977 Volume 68 Issue 3 Pages 373-374
Direct mutagenicity of N-hydroxy-4-aminoazobenzene and 4-nitroazobenzene, and their 2-and 3-methoxyl derivatives to Salmonella typhimurium TA-100 and TA-98 was examined. Mutagenic activity of these dyes was directly related to carcinogenic activity of the corresponding 4-aminoazobenzene dyes.