A method of detecting and quantifying viable cells in a sample. A station in a communications network comprises at least two antennas configured to operate together for both transmitting and receiving modes. Data sets each include at least one data set key column storing at least one data set key column record. The implanted electrode devices can be variously delivered to the tissue, for example, by detaching the electrode devices from one or more delivery devices. Based on the light reflected on, into or from the gem, the user may image the gem, and specifically, the fire of the gem. The expandable device carries a therapeutic substance.