Magnetic Targeted Delivery of Induced Pluripotent Stem Cells Promotes Articular Cartilage Repair

Figure 3

Tumor formation in nude rat in which m-iPS cells were transplanted (a and b). The nude rat in which m-iPS cells were transplanted showed tumor formation at 7 weeks after transplantation (a). Macroscopically, the tumor was solid and cystic and pressed the surrounding tissue outwards (b). Histopathological findings (hematoxylin and eosin stain) of the tumor (c, d, and e). The tumor contains immature neural tube (c), immature glandular structure (d), and immature muscle (e). We conclude that the tumor is immature teratoma. Scale bar = 300 μm.

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