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Cluster analysis of FGF and FGFRs. A, Unsupervised hierarchical clustering of FGFs and FGFRs based on tissue expression. qPCR data were clustered using average linkage with Pearson correlation coefficient using Matrix 1.28 software as described in Materials and Methods. B, Unsupervised hierarchical clustering of FGFRs and Klotho family coreceptors based on tissue expression. qPCR data were clustered using average linkage with Pearson correlation coefficient using Matrix 1.28 software.
