An apparatus for locating a plurality of objects includes a planar element. The LERK-5 polypeptides bind to elk and to hek, which are members of the ephelk family of receptor tyrosine kinases. If the sub amplifier control circuit selects a word line, a control operation is performed to activate only one side of the sub amplifiers positioned on both sides of the word line to thereby reduce the power consumed for activating the sub amplifiers. The resist composition exhibits improved resolution and edge roughness when processed by the EB or EUV lithography.