Fig. 1. Perimeter tracks of representative control and mutant cells translocating in buffer, in the absence of chemoattractant. For each cell type, cells were selected that portrayed the range of behavior. The red cell image represents the last one in each track. Cells were reconstructed at 8-second intervals. Notice that while JH10 is the control for mhcA^-, mhcA^-/mhcA⁺ is the control for 3XALA and 3XASP.