Picture of the acoustophoresis platform. The cell suspension with bead-labeled CD8+ cells enters through the side inlets (a) while the wash buffer (Histopaque-1077) is injected through the center inlet (b). Radiation forces in the acoustic standing wave field move the cell-bead complex faster to the center compared to non-target cells and can be separated in the center outlet of the channel (c). Non-target cells exit through the side outlets (d). The total length of the acoustophoresis microchip is 35mm.