A brief but intense magnetic impulse generated by a coil 42 is used to excite resonant bending mode vibration in a magnetically permeable cantilevered beam 2 immersed in a fluid 22. The compensation system includes an external pressure sensor for measuring an external pressure outside of the sealed housing and a compensation module for determining a compensation factor for the implantable actuator based on the external pressure. The relatively flexible inner liner includes, and preferably consists essentially of, an outer delamination layer adjacent to the inner layer of the body and composed of nylon, nylon blends or EVOH, an inner layer of polyethylene such as LLDPE, and an adhesive securing the inner and outer layers of the liner. Each of the multiple bits representing a replacement bit for one of the multiple values is coupled to a corresponding second input. The expanded cell population provides a source of cells as therapeutic treatments for neutropenia andor thrombocytopenia arising in patients subjected to myeloablative therapy and hematopoietic stem cell transplantation. Forced air flows from the air source, through the reduction nozzle, and into the vacuum chamber.