A method for furnishing a therapeutic-agent-containing medical device is provided. which amplifies an analog input signal of a low current by an amplification factor into a particularly analog output signal of a higher current. When receiving a message from a subscriber of the predetermined set, the Pcard that is designated for the subscriber is determined and the received message is routed to the determined Pcard. The first and second differential transistors are connected to the current source. Accordingly, generation of projection on bird’s beak of a selective oxide film can be prevented in a semiconductor device manufacturing method including a step of growing a local oxidation of silicon film. This image pickup apparatus changes a magnification by moving the second lens unit along an optical axis and corrects a deviation of an image location by varying a shape of the variable reflecting surface of the reflecting optical element.