Figure 3

(a) 3D plot showing all localised 1 µm beads in dextran flowing over the selected HeLa cell. The perturbation to the flow generated by the cell is indicated. The axial positions are colour encoded in the plot. (b) Side view of the 3D map of the velocity magnitude associated to the fluid of 1 µm beads in dextran flowing around the fixed HeLa cell. The fluid flows from right to left along the x axis. (c) Bottom view of the velocity map in (b).