Methods and devices for selectively removing an agent from a physiological efferent fluid collection site are provided. The LED chips can be adjacently located in the cavity, and an encapsulating resin including a phosphor can be disposed in the cavity so as to encapsulate the LED chips. The inserting unit inserts a dummy error at an insertion position in the data thereby obtaining error data. Further, the end section of the electrically insulating film fits in the end section of the lead frame. The plain bearing and side plate are provided with engageable portions, respectively, and are maintained in engagement with each other via the engageable portions.