PROBLEM TO BE SOLVED: To provide a biogenic substance detector having high reaction efficiency and high detection sensitivity.;SOLUTION: The detector is equipped with a plurality of chambers 1011 for hybridizing a target and a probe, and a passage 1012 provided between the chambers 1011. The passage 1012 is formed so that its cross-sectional area taken perpendicularly to the moving direction of sample solution is smaller than the cross-sectional area of the chamber 1011, and a probe-fixing area 1013 is provided over the entire inside wall of the chamber 1011. One kind of probe is fixed in one chamber 1011, and the sample solution is reciprocated in the chambers 1011 and the channel 1012 using a pump 102, in the hybridization step.;COPYRIGHT: (C)2009,JPO&INPIT
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