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Transcriptional dynamics of genes associated with provasculature, phloem, and xylem development and cell division. (A) Separated and grafted Arabidopsis tissues were harvested ∼0.5 mm above (top) and ∼0.5 mm below (bottom) the cut site. For intact plants, ∼1-mm segments were harvested that spanned the region where cuts were made in grafted and separated plants. (B) Expression levels were plotted over time for intact, separated, and grafted samples.
