Fig. 6. iplA gene is not required for electrotaxis. (A-C) Trajectories plotting the movement of cell centres under control conditions (A), in the presence of an electric field with the cathode to the right (B) and on reversal of field polarity (C). (B',C') Consecutive micrographs show directional migration of cells in an electric field of 15 V/cm at 0, 7.5 and 15 minutes (supplementary material, Movie 3). Numbers in A-C' indicate individual cells.