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Polymorphism analysis of the ERCC1 intron 1. The PCR products were digested with restriction enzyme MboII in groups 1, 4, 5 and 6; AG genotype (167 bp, 114 bp, 83 bp, 49 bp, 6 bp), 3; AA genotype (114 bp, 83 bp, 49 bp, 6 bp) 2; GG genotype (167 bp, 83 bp, 6 bp); (ladder 50 bp)
