Systems and methods for commonality factoring for storing data on removable storage media that may allow for highly compressed data to be stored efficiently on portable memory devices. At least one of the platforms comprises on its outer face a fixing screw and at least one other platform has no fixing screws, the platforms being fixed together at their adjacent edges. Regarding a customer at one of the fuel dispenser locations, a user identification such as credit card account information is sent to the remote facility. Information in the spreadsheet may then be replaced with a formula based at least in part on the determined member. The oligopeptides may be generated in vitro or in vitro and may be used as vaccines against viral infections and in epitope mapping.