An abridged multipole structure for the transport and selection of ions along a central axis in a vacuum system is constructed from a plurality of rectilinear electrode structures, each having a substantially planar face with a first dimension and a second dimension perpendicular to the first dimension. The invention also provides a method of identifying an agent for modulating the level of an endocannabinoid in a subject comprising testing the agent for its ability to modulate binding of the endocannabinoid with an intracellular FABP. In addition, the method comprises communicating the LMWD data from the bottomhole assembly to the seafloor with a telemetry signal. Determining when hopping ports usage comprise a data stream. The case can be accommodated in existing racks, or holders and displays.