An image-decoding system with multi-run mechanism and method thereof are described. This polarizing apparatus can be used as a polarizer for a liquid crystal display device, or can be disposed as a preliminary stage before a polarizer. The present invention is also directed to methods for the treatment andor prophylaxis of such intestinal disease conditions and to diagnostic agents and procedures for detecting Lawsonia intracellularis or similar or otherwise related microorganisms. The insert module has a pair of lead sections slidably received in the grooves and a pair of guide sections. They are an integral part of the seal.