The present invention provides an apparatus and a method for producing a virtual electrode within or upon a tissue to be treated with radio frequency alternating electric current, such tissues including but not limited to liver, lung, cardiac, prostate, breast, and vascular tissues and neoplasms. The invention provides methyl ester solvents suitable for use in the development of photopolymer printing plates. 5 mm and a first layer magnetic field strength of between 12 mT and 30 mT. The memory stores the gain setting value of the amplifier. Each remaining element in the first set represents data for the first picture of a respective remaining GOP, with each such remaining first picture having been encoded as either a difference picture or a P picture. The supercharger intercooler is configured via a cooling unit in the charge air guiding connection conduit between the compressor of the ATL-low pressure stage and the compressor of the ATL-high pressure stage having a cooling medium flowing therethrough as well as by a specially configured section of the connection conduit.