Fig. 3. Microtubule growth events are uniform at the cell periphery. Confocal micrographs of a CHO fibroblast (A) and an LLCPK1 epithelial cell (B) expressing EB1-GFP. The average number of growth events per unit area is not statistically different at the leading and trailing edges of either CHO or LLCPK1 cells. Scale bars: 5 µm.