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Photomicrographs illustrating positive immunoreactivity (fluorescein isothiocyanate; A and C) and corresponding DIC (B and D) for cells stained with a broad-spectrum cytokeratin antibody (CK8.13). No differences in cytokeratin immunoreactivity were observed for HRPE in either the presence (A and B) or absence (C and D) or Galardin (scale bar, 4 μm).
