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    WIRELESS NEURAL STIMULATOR WITH INJECTABLE,  · non-invasive, injectable electric field concentrator that targets the stimulation to an area measured in microns, and/or (3) ... 21b show the placement of high-permeability material on the first and second opposing faces, respectively, of a planar, spiral a b ...What is the best place to buy pay dirt from,  · I was wondering if anyone has a preferred place to buy pay dirt to pan with where you will find good color. I ask because my 5 year old daughter has become bitten by the gold bug and I want to help "cultivate" her understanding of the trade. I my self am green at it ...