FIGURE 2:  DYNAMIC "C"-TO-SPOT TRANSITION IN PSEUDOPOD RETRACTION AND CELL SQUEEZING     "C"-to-spot in pseudopod retraction. [size: 3,840 KB] "C" condenses to spot in pseudopod as it retracts in GFP-MHC cell resting on substrate.  "C"-to-spot in cell squeezing. [size: 7,280 KB] "C" condenses to spot at cell rear as GFP-MHC cell squeezes between two neighboring unlabeled cells on substrate. This movie was obtained by simultaneous fluorescence and brightfield microscopy.