Fig. 7. Changes in the distribution of GFP-myosin II during the formation, elongation and retraction of protrusions in the presence of quinine. (A) Fluorescence is shown in red and Nomarski images in green. Time=0, 5.0, 10.0, 15.0, 20.1, 25.1, 70.9, 142.5 seconds. (B) A cell with a retracting protrusion and a large protrusion that is about to stop extending. The small protrusion is entirely covered with a layer of GFP-myosin, whereas the large protrusion has a constriction at its base, from which a band of GFP-myosin II extends towards the tip. Intervals between successive frames are 47.7 seconds. Bars, 10 µm.
