Traction force dynamics in mhcA⁻ cells. (A and B) Kymograph of the instantaneous magnitude of the traction stresses and axial tension for a mhcA⁻ cell. Black and red arrows in A indicate stationary back and lateral TAs, respectively. A detailed view of the dynamics of the lateral TAs is shown in B, corresponding to the time interval indicated by the black box in A. Top, middle, and bottom rows show the magnitude of the total, axial, and lateral stresses, respectively. The inclined red and black lines indicate the instantaneous position of the front and back cell edges. (C) Same as Fig. 3 B but now corresponding to the mhcA⁻ cell shown in A. (D) Same as Fig. 5 J for n = 8 mhcA⁻ and n = 12 wild-type cells.