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TCF7L2 pairwise LD structure. Pairwise LD and haplotype block structure as determined by the method of Gabriel for the 40 SNPs genotyped in our Mexican-American families. LD is displayed as pairwise r2 values (values within boxes), where white indicates r2 = 0, varying shades of gray indicate 0 < r2 < 1, and black indicates r2 = 1.
