A stent is made flexible along its length. The antenna is formed on a single substrate of dielectric material and features a first antenna for a first frequency on top surface of the substrate mutually coupled to a second antenna formed for reception of a second frequency on the bottom surface of the substrate. Additionally provided herein are methods for introducing transgenes into inbred corn line MFX7589, and plants produced according to these methods. The spooling mechanism is coupled to the other slip buckle, preferably by means of a fixed length belt, to complete a tourniquet loop. The proximal portion of the flexible carrier may be rigidly attached to the static part.