In a fuel cell system of the invention, a pressure regulator is provided in the pathway of a hydrogen supply conduit that connects a hydrogen tank to a fuel cell stack. In some examples, the syntax structure is a profile_tier_level syntax structure. At least one of the first device and the second device includes an adaptor for adapting a respective certificate list to provide entry of a new signature for identifying a new manufacturer of one of the first devices and the second devices. The refrigeration unit may be positioned at the top of the merchandise display system and may be removable. The present invention also concerns a method for detecting inflammatory chronic diseases, non-inflammatory chronic diseases andor acute phase reactions comprising the determination of hepcidin. In certain embodiments, the invention provides pharmaceutical compositions comprising the skeletal muscle relaxant carisoprodol and one or more additional active agents, such as one or more nonsteroidal antiinflammatory drugs.