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Representative histological images of sagittal spinal cord sections at 15 weeks after transplantation of YZWJs513 hiPSC-NS/PCs into the lesion epicenter of NOD/scid mice. (a) Tumor formation was not observed in a hematoxylin & eosin (H-E)-stained section (b–d) Immunohistochemical staining of human nucleotide antigen (HNA) showed engraftment of transplanted NS/PCs. Arrows indicate the lesion epicenter.
