Linkage disequilibrium (D') plot of IPF1 gene in Caucasians. SNPs are shown by location as in Table 1 and Figure 1. As in Figure 2, plots were generated in HaploView v3.2. Squares without numbers represent D' values of 1.0; all numbers represent the D' value expressed as a percentile. Red squares represent pairs with LOD score for linkage disequilibrium of ≥ 2, blue squares represent D' = 1 but LOD<2, and white squares represent LOD<2 and D'<1.0. plots were generated using HaploView v3.2.