Fig. 7From: Genetic polymorphisms and gene expression of one-carbon metabolizing enzymes and their relation to breast cancerAgarose gel (2%) electrophoresis of PCR–RFLP for DNMT3B. Lanes 2, 3, and 7 represent heterozygous genotypes (380 bp, 207 bp and 173 bp). Lanes 4 and 5 show homozygous wild type at 380 bp. Lane 1 represents 100 bp DNA molecular weight markerBack to article page