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Differentially expressed genes (DE-gene) under cadmium stress. (A) Principle component analysis of differential gene expression across each cell type. (B) Number of up- and down-regulated DE-genes detected from sample-to-sample comparison. ADF represents root hair cells, GL2 represents non-hair epidermal cells, and WRT represents whole root tip at time point of 0, 24, 48, and 72 h of Cd stress. Root hair-specific cluster is circled in red.
