Abstract: This invention provides a novel method of tissue electroporation that eliminates the need for electrodes that conduct electricity to the tissues. This invention creates electric currents and fields sufficient for porating cell membranes for improving the delivery of polynucleotides such as plasmid and linear DNA and RNA constructs, and polypeptides such as antigen protein constructs into mammalian eucaryotic cells purely by magnetic field pulses that does not require the use of contacting electrodes to conduct electric or ionic current. This invention thus provides a method for improving transfection and immunogenicity of pharmaceutical substances without direct contact with a living body, and may be called magnetopermeabilization. A concomitant aspect of the invention is the method by which a drug such as a solution containing DNA is delivered to a targeted tissue bed that is optimal in conjunction with magnetopermeabilization for maximal transgene expression and drug effect.