The present invention relates to a peptide compound which causes a tumor-specific T response, and which comprises a sequence of at least 8 consecutive amino acids of the peptide sequence encoded by a frame-shifted sequence of the iCE gene. An amplifying circuit for such a laser diode drive power supply circuit, an optical disc recording andor reproducing apparatus including such a laser diode drive circuit and a laser diode drive method for an optical disc recording andor reproducing apparatus are also provided. The scanner communicates with the circuit, which in turn communicates with a host computer. The composition is used in oilfield treatments such as drilling, completion and stimulation where it disappears when it is no longer needed without the use of mechanical means or injection of additional fluids. Thereafter, the client issues a DNS query with the translated information including popularity information. while generating reaction products containing CN group.