A triode includes a semiconductor, a deep n-well, a p-well, an n+ doping region, and a doping region. According to the present invention, immunosuppressive cells can be efficiently induced by using a solid culture and can provide an efficient therapeutic system for diseases caused by hypersensitivity of the immune system with less side effect. Any changes made to the trees or spreadsheet cells can subsequently be translated to the corresponding trees andor cells. The semiconductor device executes a refresh operation according to the refresh signal. The driver then exits and the probe serves to guide the hitch into the receiver well as the trailer tongue is lowered toward the truck bed following which a pair of lock pins are used to complete the hitching. An object of the present invention is to improve message transfer effect of various information pieces such as advertisement, by employing a connector which can selectively control a magnification of an image to be displayed while decreasing the sizes of a condensing member or a liquid crystal panel.