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. Author manuscript; available in PMC: 2010 Sep 25.
Published in final edited form as: Circ Res. 2009 Aug 20;105(7):648–656. doi: 10.1161/CIRCRESAHA.109.203109

Figure 2.

Figure 2

Validated pluripotency of iPS according to in vivo differentiation. A, Fulfilling increasing levels of pluripotent stringency, 3F-iPS generated teratoma when injected subcutaneously into immunodeficient host. Tissues from the three germinal layers were identified by hematoxylin-eosin staining (40x magnification) represented by glandular epithelium (endoderm), keratinized epidermal ectoderm (ectoderm) and connective tissue (mesoderm). B, Cardiac tissue was found in teratomas derived from 3F-iPS as characterized by hematoxylin-eosin stained striations (left) and immunostaining for cardiac proteins α-actinin (middle), and troponin-I with connexin 43 (right). bar 10 μm. DAPI: 4,6'-diamidino-2-phenylindole.