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Haplotype block structure of the SNAP25 gene region (around 130 kb) in the Caucasian population (Northern European descent, living in Utah) from HapMap release 23a. The solid line indicates the position of the SNAP25 gene, the vertical line shows the position of the 2 studied single nucleotide polymorphisms in the 3′ UTR region and the broken line indicates the location of haplotype blocks.
