FIG. 4.

Alignment of combined human in vitro differentiation and mouse embryonic liver development data. Combined human in vitro and mouse in vivo data sets were subjected to the PCA. The blue and red circles of mouse samples represent two different studies (see Fig. 2). Human in vitro differentiation data are represented by color according to their differentiation state. Endodermal cell, hepatic progenitor cell, and HLC samples are in green, purple, and blue, respectively. The circles, squares, and triangles correspond to samples from references [3,28,31,36]. Color images available online at www.liebertpub.com/scd