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DNA fragments on agarose gel electrophoresis after restriction enzyme digestion of exon 1 of MBL gene. 349 bp PCR product was digested with BanI for codon 54 polymorphism ND). The normal allele (Allele A) is cut into two fragments with BanI, 89 bp, and 260 bp. The variant/mutant allele (Allele B) remains uncut. L: 100 bp DNA ladder ND: non-digested PCR product.
