Fig. 4.

Data from thirteen indentation force-depth tests obtained from AFM indentations of unstretched cells were fitted with the CSK remodeling model (solid line) to estimate the mass fraction of F-actin in unstretched state. Experimental data were chosen from 3 cells each from 2 independent experiments. Although not shown, fits were similar in parameter sensitivity studies wherein the values of c in equations 7 and 8 were varied by ±10%.