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Alkaline phosphatase (AP) expression in retinal ganglion cell axons three weeks after retinal progenitor cell transplantation. A: Dissected eyes and optic nerves. B, C: Cross-sections of optic nerves from noninjected and injected eyes. D-G. AP stained Pou4f2-AP (D) buffer-injected (F) and injected (E, G) optic nerves. Sections were counterstained with Nuclear Fast Red. Scale bars: A: 1 mm; B, C: 100 μm; D-G: 25 μm.
