Fig. 3From: Genetic polymorphisms and gene expression of one-carbon metabolizing enzymes and their relation to breast cancerAgarose gel (3%) electrophoresis of the PCR product of the promoter enhancer region in the 5′ UTR in the TYMS gene containing tandem repeats (rs45445694). Lanes 2, 6 and 7 represent the 2R/3R heterozygous genotype, and lanes 3, 4 and 5 represent the 2R/2R homozygous genotypeBack to article page