A roll control actuator for a stabilizer bar includes an outer housing that is fixed to a first bar portion and a shaft that is fixed to a second bar portion. The broth is processed to selectively remove pertussis toxin and filamentous haemagglutinin, the pertactin is precipitated by ammonium sulphate and the precipitate is dissolved in buffer at pH 6. Since the separate communication system can only communicate when powered, a separate passive wireless communication device is provided for wireless communication that does not require power from the power supply to communicate. The invention further provides methods for drug screening to identify compounds have the ability to inhibit MUC5B gene expression.