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Procambium is a type of primary meristematic tissue in plants that is responsible for forming the vascular tissues, specifically the xylem and phloem. It arises from cell divisions in the central core of the plant shoot, just below the apical meristem. These cells differentiate to form the vascular system, which includes conducting and supporting tissues. In woody plants, the procambium that has not fully differentiated can develop into the vascular cambium, a lateral meristem that produces secondary growth, increasing the plant's thickness.1234

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