Fig. 4. The net translocation of CHO cells in an EF. Cells were followed for a 3-hour period in an EF (B-H) or without an EF (A). Each cell's position at t=0 is represented by the origin (0,0), with the final position of each cell at 3 hours plotted as a single point on the graph. The radius of each circle represents 100 µm (the average cell length is 25 µm). n, the total number of cells at a given condition. Values of directedness (the average cosine of the distribution) ±s.e.m. are indicated in the upper right corner of each plot. (C-H) Treated with different inhibitors then in an EF with continuous presence of the same drug. EF, 300 mV/mm.