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Agarose gel electrophoresis (3%) showing PCR products of SNP-19 (rs3842570). M: DNA ladder of 1000 bp. Lane (3) represents the homozygous genotype (155 bp), lanes (9,10) represent the homozygous genotype (187 bp), and lanes (1,2,4,5,6,7,8) represent the heterozygous genotype (155 bp and 187 bp).
