There is disclosed an improved ADC type composition having at least two different drug payloads conjugated to a single targeting protein. This invention is an authentication system, which comprises a wireless communication terminal and a base station for establishing wireless communication with the wireless communication terminal. The device also includes a cathode cleaner and a bottom up stacker assembly for stacking zinc sheets. A photoresist layer applied over the entire surface of the first conductive layer is selectively patterned to define a plurality of laterally separated regions on the first conductive layer. The zones are each located so as to extend between the neighboring patterned conductive films and are further located so as not to overlap with the transmissive regions and regions laid over LDD portions of the polycrystalline silicon film.