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Principal component analysis of changes in innate immune gene expression in failing and non-failing human hearts. Innate immune genes (Table 2) were subjected to a principal component analysis (PCA), and the first, second and third principal components were displayed in a 3-D graphic format (see Data Supplement for details). The 3-dimensional PCA analyses depicted in this figure accounted for 36.6% of the total variation of the entire data set.
