A toy top which encases a plurality of repelled magnets and a magnetic controller which encases a controlling magnet. A holder is movably supported to the rear side of the base section and pivotable in the second direction. A bobbin is affixed in the distal portion of the carcass. They also show an unexpected ability to radiosensitize aerobic cells following or preceding a hypoxic incubation of the cells with the drug. The transmission flags may be used in conjunction with mode registers such that one or both of the transmission flag and the data may be received by or delivered by a corresponding memory device. % of hard particles such a W, Al2O3, etc.