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Limbal localization of stromal stem cells. Cells in the anterior stroma of human cornea were detected which express both PAX6 (red) and ABCG2 (green). (Arrows) Most of these cells were near the folded region of the epithelial basement membrane known as the palisades of Vogt. The white bar represents 50 µm. (Reprinted with permission from Du Y et al.17)
