Fig. 7.

Cytotoxicity analysis by live dead staining of hMSCs cultured on (A) aligned and (B) Flat PDMS substrates. Viable hMSCs stained with Calcein AM gives green fluorescence. Dead cells containing EthD-1 gives red fluorescent signal due to compromised plasma membrane integrity (white arrows). No obvious difference in the dead cell signals was observed between control and different surface coatings.