Abstract: The present invention provides a method of inhibiting the growth of proliferating cells or viruses in living tissue, the method comprising: applying mid-level frequency AC current electromagnetic signals to the living tissue with a transducer comprising a magnetically conductive material passing through a conduction ring energized by an electrical signal to create the mid-level frequency AC current electromagnetic signals within the living tissue; wherein the mid-level frequency AC current electromagnetic signals have a frequency in the range of about 50 kHz to about 300 kHz and are produced with an AC voltage generator; and circulating fluid in the living tissue provide a secondary coil for the transmission of the mid-level frequency AC current electromagnetic signals.