The invention provides a liquid composition and a lyophilized composition comprising a therapeutically effective amount of a conjugate comprising an antibody chemically coupled to a maytansinoid. The stator core includes a yoke and tooth portions projecting from the yoke in a radial inward direction. Preferably, the sonochemically-active microspheres comprise, consist essentially of, or consist of gas bubbles encapsulated within protein-containing or lipid-containing shells. The source electrode or the drain electrode that is connected to the pixel electrode is made from the same material as the pixel electrode. A workpiece, which will be cut into a plurality of second outer portions, is heated.