The present invention relates to the use of copper ions to achieve enhanced retention of a therapeutic agent within a liposome. The coloring structure is provided with a coloring mechanism for producing at least an interference color resulting from interfered light, a first object color resulting from reflection of transmitted light produced by the base, and a second object color resulting from reflection of incident light produced by the base without striking any brilliant units. In this case, in a highlight density region in which a pixel density is equal to or less than of the maximum image density, the density data of two adjoining pixels is modulated by one pixel and the other pixel is not recorded. The apparatus also includes a core access trigger circuit that receives the burst control signal and generates a core access signal that is used to begin a core access for burst mode operation of the memory. As still further another measure, the probe coil for an NMR apparatus is formed by using a single metal selected from gold, silver, copper, aluminum, iron, platinum, palladium, nickel, stainless steel, chromium, magnesium, tantalum, niobium, titanium, zinc, beryllium, tungsten, or cobalt, or an alloy including a plurality thereof. Also, a stray field effect occurring from a fixed magnetic layer is reduced such that a written magnetization data is thermally stable.