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Gene expression patterns of clusters 1 and 2 and enrichment of genes in each cluster with functional categories. Self-organizing maps (SOM) clustering of differentially expressed genes revealed four clusters with distinct gene expression patterns. Time-course profiles of cluster 1 (A) and cluster 2 (C) and enrichment of functional annotations in cluster 1 (B) and cluster 2 (D) are shown. Genes contained within each cluster are listed in Supplementary Tables S1 and S2, respectively.
