A, B, C: JurkatT cells transfected with siRNA control, FIP3.1 or FIP3.2 were allowed to spread on poly-lysine-coated coverslips for the indicated times. Intracellular actin was detected with FITC-coupled Phalloidin. A: A single optical section at the level of the contact surface is shown. Bar, 5 µm. B: Population analyses of the spreading area of cells at the level of the contact surface. Each dot represents one cell. Horizontal bars represent the mean ± SEM. C:Time course representation of B, showing mean ± SEM. 