A variety of applications, systems, methods and constructs are implemented for use in connection with screening of ion-channel modulators. 01 to 5 weight percent imidazole: 0. A switch circuit is positioned after the clock and data recovery unit, and is configured to route data from the receiver unit to the transmitter unit in a test mode of the transceiver. A slot is formed in the first principal surface such that the slot extends through the first conductive layer and faces the protrusion. Storage and use of modifier information in addition to a set of sequences of characters enables recognition of words with or without modifiers.