A self-supporting display stand comprising a rigid base, a pair of upstanding rod-like support masts mounted on the base, and a corresponding pair of tension cables which connect the upper ends of the masts to the base. The enzyme inhibitors are derived from tubers, such as potatoes. The method addresses the problems with conventional inverse dynamics analysis by providing a forward dynamics solution for estimation of joint loads that is stable, guaranteed to converge, computationally efficient, and does not require acceleration computations. The filter support frame is movable between a collapsed position for movement through the vascular system and an extended outwardly projecting position to support the filter body in the expanded position.