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Structures of BPDE adducts. (A) Sequence and structure of the (−) and (+) anti-trans-BPDE adducts covalently attached to N6 of adenine in the N-ras codon 613 on an 11-mer oligonucleotide. (B) Sequence and structure of the (−) and (+) anti-trans-BPDE adducts covalently attached to N2 of guanine in the N-ras codon 122 in an 11-mer oligonucleotide.
