Disclosed is an expandable fusion cage which facilitates the fusion of adjacent bony surfaces, preferably those in the spine. The pressurized fluid source is operable to propel a fluid through the fluid discharge to move the food product from the first end portion of the conduit toward the second end portion. The extracting unit receives, from the service system, print data to be printed by the image forming apparatus, and extracts and outputs the first identification information set in the received print data. The sulfur particles have an average diameter of less than 50 nm. The system can include an ultraviolet sanitization system that limits microbial growth in the system.