Figure 1From: A cross-species transcriptomics approach to identify genes involved in leaf developmentPrincipal component analysis overview of gene expression in different tissues of Populus tremula × tremuloides 'T89. PCA overview of the expression of the 14446 genes (A) and of the only the 955 transcription factors (B) represented on the POP2 microarray in different tissue types of Populus tremula × tremuloides 'T89'.Back to article page