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PCR-RFLP restriction products of the GSTA1 gene. Lanes 1 and 2 represent PCR products of GSTA1*CC genotype (400 bp bands); lanes 3, 5, 6, and 7 represent PCR-RFLP restriction products of GSTA1*CT genotype (400 bp, 308 bp, 92 bp bands); Lane 4 comprises RFLP-PCR restriction products of GSTA1*TT genotype (308 bp, 92 bp bands); M, DNA marker; N, negative control without a DNA content.
