Figure 5.

In vivo multi-differentiation potential and tumorigenic analyses. A-F: The teratomas derived from ES cells were composed of a variety of types of differentiated cells from all three primary germ layers including secretory glands (B), muscle (C), epithelium (D), neuroectodermal cells (E) and cartilage (F); G-I: The tumor-like bumps derived from ES-HPCs contained only epithelial (H) and mesenchymal-like cells, and duct-like structures (I) surrounded by several epithelial cells were also observed.