A gene encoding a methylated catechin synthase that can effectively synthesize methylated catechins having high antiallergic activity. The leads are electrically connectable to a medical radio-frequency generator. The protein itself and antibodies to this protein are also presented. A calibration circuit may be coupled to the buck converter or other power conversion to determine a calibrated voltage signal for the output of the power converter. Known control devices have a piezoelectric actuator, which controls a multi-position valve, embodied as an outward-opening valve with a valve member guided in a valve bore. When the session is terminated, the set top box re-tunes the television signal to the original program channel.