Fig. 2From: Consistent apparent Young’s modulus of human embryonic stem cells and derived cell types stabilized by substrate stiffness regulation promotes lineage specificity maintenanceCytoskeletal organization and focal adhesion formation in hESCs and HepaRG cells on different substrate stiffness. a, b Cytoskeletal organization (arrows = actin stress fibers) and c, d vinculin formation (arrows = elongated clusters, with locally enlarged vinculin clusters) in hESCs a and c and HepaRG cells b and d during culture on different substrates. Scale bars = 10 μm. e, f Quantitative analysis of vinculin clusters per cell in hESCs and HepaRG cells over the culture period. *P < 0.05Back to article page