Most environmental causes of cancer are mutagens mutagenic compounds, X-rays, uv Enzymatic conversion HC to reactive epoxide Spontaneous reaction with N7 of guanosine Aflatoxin B H G H2 3, benzpyrene DNAMost environmental causes of cancer are mutagens: mutagenic compounds, X-rays, uv Enzymatic conversion ve epoxide Spontaneous reaction with N7 of guanosine H i 3C O O O O O O to react H3C O O Aflatoxin B O O O HO O O N+ HN G H2N N 3,4-benzpyrene N DNA