Fig. 1

Amplifications of CYP1A1 m1 and the RFLP products of the polymorphic forms: a PCR for CYP1A1 m1 (340 bp) in multiple samples. b CYP1A1 m1 polymorphisms were detected by RFLP. The 340-bp PCR product was digested with Msp1 enzyme. Lanes 4 and 9 represent homozygous major type (TT; 340 bp); Lanes 3 and 12 represent homozygous minor (CC; 200 and 140 bp); Lanes 1, 2, 5, 6, 7, 8, 10, 11, 13, 14 and 15 represent heterozygous type (TC; 340 bp, 200 and 140 bp)