Figure 3From: Genome scale transcriptome analysis of shoot organogenesis in PopulusClustering of differentially expressed genes identified by LIMMA. The ratios of gene expression at each time point and the highest level of expression of that gene among the five time points (i.e., a within-gene scale) were used for scaled clustering. Five distinctive expression patterns are labeled and discussed in the text (1-5). Expression scaling is indicated below clusters.Back to article page