A display substrate includes a plurality of pixel parts, each including a first and second gate lines, a source line, first, second, and third transistors, and a pumping capacitor. In particular, the present invention discloses nucleic acid molecules encoding canine IgG, including species-specific regions of the heavy chain of canine IgG, and canine IL-13R alpha chain proteins, particularly canine interleuken receptor alpha 1 and canine interleuken receptor alpha 2 proteins. The switch also has an encoder pattern for sensing rotation of the barrel. A product selection means enables a user to select a cosmetics product. A bit holder of this kind can be implemented in compact and stable fashion in particular by the fact that the longitudinal center axis of the bit receptacle intersects the support surface.