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Schematic presentation of a corneal equivalent in vitro culture model: (A) Corneal endothelial cells are grown to confluency on a culture insert. (B) A collagen layer containing stromal cells is grown on top of the corneal endothelial cell layer. (C) Epithelial cells are seeded on top of the collagen layer. (D) Exposure to air–liquid interface results in a stratified epithelium.71
