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Influence of the matrix composition on dynamic and static contractility of CMTs tethered to rigid (k=0.45 μN/μm) cantilevers. (A) Average tension, (B) cross-sectional area, and (C) cross-sectional stress for CMTs constructed from 0.5 mg/mL fibrin and 1.0 mg/mL or 2.5 mg/mL collagen gels at day 5. Data are the average of 15 CMTs±SEM. (D) Corresponding phase-contrast images. *p<0.01, **p<0.01.
