Figure 1From: Reference loci for RT-qPCR analysis of differentiating human embryonic stem cellsMorphological evaluation of human embryonic stem cell culture. Comparison of an undifferentiated colony (A: phase contrast, B: bright field image) with differentiated hES cells on day 3 (C, D) and day 5 (E, F) after retinoic acid induction (scale bars = 100 μm).Back to article page