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Mechanical strength of 8-week old cell sheet before and after decellularization. (A) Frequency sweeps of cell sheets and ECM sheet after decellularization. The elastic modulus (G') and viscous modulus (G”) remained constant over all frequencies. (B) Comparison of the average modulus at frequency 1 Hz. The ECM scaffold maintained elastic modulus, but had significant lower viscous modulus than the cell sheet.
