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Expression of putative stem cell markers in healthy limbal epithelial cell cultures on amniotic membrane. The healthy (NL) cells are generally positive for ΔNp63α (A, B) and K17 (C, D). Many cells are also positive for ABCG2 (E, F). The right panels have 4',6-diamidino-2-phenylindole (DAPI) nuclear counterstaining. As ΔNp63α is also nuclear, the corresponding DAPI panel is shown separately. Bars=20 μm.
