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Expression of AF-related genes and non-AF-related genes in left atria (left) and right atrial appendage (right). Each grey dot represents the expression level for each gene. Kolmogorov-Smirnov test on independent genes in each set (Spearman’s r2< 0.25) showed that AF-related genes tended to have higher expression than non-AF-related genes in both tissues (P<2.2×10−16).
