A storage controller for controling access to data storage has a memory and at least one data port for a data network including host processors. Methods of measuring the in vivo metabolism of biomolecules produced in the CNS in a subject are provided. In a suitable embodiment, each reinforcing element is fixed in two opposite slots and extends through a cavity in the blank. The resulting TCAM cell provides exhaustive fault testing thereby detecting and eliminating faults in TCAM. Further, one or more business opportunities are generated for one of the traders. The subject clears away tiles by pairing them with identical tiles.