Figure 1From: Matrix metalloproteinase-9gene polymorphisms in nasal polyposis LD plot of four matrix metalloproteinase-9 ( MMP9 ) single-nucleotide polymorphisms. The pairwise D' value (percentage) is displayed in each cell. The cells in dark gray indicate strong linkage disequilibrium. The bar on the top is the MMP9 gene structure and location of each single-nucleotide polymorphism.Back to article page