A method of manufacturing a thin-film transistor or like structure provides conductive \u201ctails\u201d below an overhang region formed by a top gate structure. The first EL layer is positioned on the bottom surface of the first transparent substrate for displaying a first image on the first transparent substrate. At least one replication-only trigger which is associated with a replication operation is registered. In use, blood is conveyed into the device, where platelets are separated from at least a portion of the blood.