Gene detecting chip, detector, and detecting method

摘要

A detecting chip ( 2 ) comprising a body ( 5 ) and a frame ( 4 ) both detachable from each other. A large number of projecting pin electrodes ( 10 ) are arranged in a matrix inside the body ( 5 ). Oligonucleotide consisting of different gene sequences is fixed to the pin electrode ( 10 ). A common electrode is so disposed in a recess ( 8 ) in a frame ( 4 ) as to be out of contact with the pin electrodes ( 10 ). A DNA sample is placed in the recess ( 8 ). By applying a voltage between the common electrode and the pin electrodes ( 10 ), a current is detected to detect a hybridized two-strand DNA, thus analyzing a gene DNA.