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Schematic (i) and fluorescent image (ii, scale bar 1 mm) of coculture dental epithelial cells (green) and dental mesenchymal cells. Confocal image of the area at the interface between the hydrogels (iii, scale bar 100 μm) and magnification of the area in the white box showing polarized cells (iv, scale bar 20 μm) [122]. All images used with permission.
