Video 3.
Transient knockdown of SKAP55 impairs cell boundary stability downstream of TCR ligation. Cell shown from Video 2 with areas of boundary growth and retraction marked in red and blue, respectively, using iVision scripts. Boundary fluctuation was calculated by dividing areas of growth (red) and retraction (blue) over total cell area during the length of the movie. This video is related to Fig. S1.