Figure 1 of Zhuang, Mol Vis 2012; 18:634-644.

Figure 1. Three haplotype blocks of 7 tag SNPs of the IGF-1 gene. Seven tag SNPs for IGF-1 are shown in relation to the three haplotype blocks in HapMap CHB population, which were determined by the Haploview 4.2 program and the HapMap database. Darker shades represented stronger linkage disequilibrium.