Access to a CSMACD network is provided via a telephone line by providing a master modem at the head end and a slave modem at the subscriber end of the line. The proteins may be identified, for example, by 2D-gel electrophoresis or by specific binding partners, such as antibodies. An undergarment body includes a front panel and a rear panel, which are joined to the first waistband section and the second waistband section, respectively. These films are useful in polarizer, protective, and compensator films and in molded optical parts, such as lenses. Effluent from the de-nitrifier is polished by feeding back a fraction of the effluent through the aeration station from which the nitrate water is derived, or a separate polishing station can be provided. The lateral edges of the separators, superimposed while being conveyed by the conveyance unit, are joined to each other by the first joining units from the front end side of a conveying direction.