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Pairwise linkage disequilibrium (LD) reported as r2 for 115 SNPs on chromosome 19 in (A) African-Americans and (B) Caucasians of CARDIA. The colour gradient indicates relative level of LD from black = complete LD (r2 = 1) to white = no LD (r2 = 0). Black boxes indicate the locations of rs429358 and rs7412, in the APOE gene, and of rs35136575.
