New hydrogel, including a hydrogel containing cationic BSA is included in a vaccine to stimulate the immune system to increase the potency of the vaccine. Also, the invention is directed at a resonator and exhaust system wherein when an attempt is made to raise the engine speed from the idling state, the engine speed will be smoothly raised. The system partially correlates a received PN composite encoded signal with a first minor epoch derived from the at least three PN component codes. Lock rules are provided, to perform synchronization and buffer management. In this stuck-open failure detection system, the openclose controller is operable, in response to an operation for starting the engine, to open the shutoff valve and then close the shutoff valve after a lapse of a given time, and the stuck-open failure detector is operable to detect the stuck-open failure, based on a pressure change detected after the openclose controller closes the shutoff valve. The transverse connector includes a connector arm, a first coupling assembly proximate a first end of the arm, and a second coupling assembly proximate a second end of the arm.