Fig. 7. Myosin dynamics in a fragment during polarization. See Sequence 6 (1.3 M). An initially stationary fragment became polarized and started to locomote after pulling at the stalk and breaking it. Initial position of the fragment is indicated by dashed line. Concentration of myosin II at the trailing edge and formation of myosin-free protrusion at the leading edge are followed by development of a graded myosin distribution. Bars, 2 µm.
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