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Immunofluorescence emission of PDX-1, Ngn3, and PTF-1a after HF-MSC transplantation. Co-localized, transplanted HF-MSC and pancreatic progenitor cell markers in pancreas. PKH67-labeled cells (green) are co-localized with pancreatic progenitor cell markers PDX-1, PTF-1a, and Ngn3. Nuclei are labeled with DAPI (blue). PKH67-positive cells are scant in rat spleen, lung, and liver. Scale bar, 50 μm.
