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TEM of corneal epithelial–stromal co-cultures at low magnification. 2–3 layers of hCECs formed at the apical side of the construct with dispersion of fibroblasts (arrows) within the self-assembled matrix and on top of the transwell membrane. The total thickness of the construct = 45 μm. Magnification = 1600× (left panel) and 3000× (right panel).
