Patent ID: 7491311
Filing Date: 2009-02-17
Classification: B01J,C12Q,C40B,G01N

Abstract:
1. A method of detecting nucleic acids each having a predetermined sequence included in a test liquid, the method comprising: contacting the test liquid to a nucleic acid detection sensor, the nucleic acid detection sensor comprising: a plurality of nucleic acid chain fixed electrodes to each of which a probe nucleic acid chain is fixed; a counter electrode which is arranged opposite to the nucleic acid chain fixed electrodes, in which a current flows between the counter electrode and each nucleic acid chain fixed electrode; and a reference electrode, in which the reference electrode and the nucleic acid chain fixed electrodes are formed on the same plane and the reference electrode is formed so as to surround the nucleic acid chain fixed electrode; performing a hybridization reaction between the probe nucleic acid chains and nucleic acid chains in the test liquid; and measuring electrochemical signals flowing between the plurality of nucleic acid chain fixed electrodes and the counter electrode.