“… tea extracts , especially oolong and pouchong teas, markedly inhibited the mutagenicity of 2-amino-3-methylimidazo (4,5-f)quinoline (IQ), …-pyrido-(4,3-b)indole (Trp-P-1), 2-amino-6-methyl-dipyrido(1,2-a:3',2'-d) imidazole (Glu-P-1), benzo[…) and aflatoxin B1 (AFB1).”