Method of detecting Symmetrical dimethyl arginine in biological samples. Content stored on a device can be examined or searched based on the programming of channels that are available to the device over various networks. Steps a) and b) can be performed in a \u201cone pot\u201d reaction. A control gate opposes the floating gate. The main vehicle module and secondary vehicle modules are relatively positionable relative to one another to obtain a first and second vehicle configuration. Also described are a method for treating bacterial infections by administering to an animal a pharmaceutical composition containing a therapeutically effective amount of a compound of the invention and processes for the preparation of such compounds.