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Actuation unit of the bioreactor: Motor connected to an eccentric (1); connection rod (2); piston (3); cylinder (4); air chamber (5); fixing coil (6); speed regulator (7); base plate (8). The actuation unit generates a pulsatile flow and provides a compact and stable base for the whole bioreactor system. The flow is adjustable from one to sixty pulses per minute. Scale bar = 50 mm.
