Figure 1From: Distinct differentiation characteristics of individual human embryonic stem cell linesMorphology of hESC colonies. Cells grown on MEF (A and C) or HFF (B and D) after enzymatic passaging with collagenase IV. The initially attached colonies are smaller on MEF (A and B, FES 22 cells 36 h after passaging). At three days, the colonies on MEF (C) are larger, better defined and more homogenous than on HFF (D). Scale bar is 100 μm.Back to article page