Fig. 8.
Induced pluripotent stem (iPS) cells derived from human dental stem cells. (A, E, I) ES cell-like colonies. SHED, SCA, and DPSCs were reprogrammed into ES-cell like colonies with the 4 factors (Lin28, Nanog, Oct4 and Sox2). These iPS cells form teratomas in SCID mice containing tissues of all three germ layers. (B, F, J) Mainly primitive neural tissues, neural rosettes and retinal epithelium (ectoderm); (C, G, K) mainly cartilage (mesoderm); D, H, L) mainly glandular tissue or respiratory epithelium (endoderm). Scale bars: (A, E, I) 500 μm; (B, F–H, L), 200 μm; (C, J, K), 50 μm. *, in (K) indicates the space of a cavity inside the teratoma. (Adapted from (97) with permission)