The present invention relates to methods for screening molecules and methods to detect protein-protein interactions and means used therein. The reflector plate is allowed to move relative to the dielectric substrate while keeping the predetermined angle of inclination. Onflow surfaces following downstream are bent out in a concave manner and in opposite senses. Thus, the appearance of the pointer type indicating apparatus can be simplified, and the user can be provided with an intuitionistic operation. When writing the second data, the arithmetic unit does not select a word line adjacent to a select gate line, and selects a word line not adjacent to the select gate line. An authenticator device that is configured to authenticate devices in a lossy network receives an authentication start message from a particular device to be authenticated.