Fig. 4. Focal adhesion kinase expression is detected in the SkMSCs cultured on the MBP-FGF2-immobilized matrix. Confocal microscopic images of immunofluorescence staining of vinculin (red) and F-actin (green). SkMSCs were cultured on MBP-GF2 matrix (50 μg/mL) and Matrigel for 48 h in growth medium. White arrows indicate the cytoplasmic area overlapped between vinculin and F-actin expression. Scale bar, 10 μm.