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Agarose gel electrophoresis result of eNOS 27-bp VNTR polymorphism. Fragments containing 420 bp (eNOS b allele) and 393 bp (eNOS a allele) can be visualized. Lanes 1, 2, 4, 6, 7, 8 and 10 show the bb genotype; lanes 3, 5 and 9 show the ab genotype; lane M: DNA marker. The rare aa genotype was not found in patients with LCPD and healthy controls. eNOS, endothelial nitric oxide synthase; VNTR, variable number tandem repeat.
