Patent ID: 7713692

Claim:
A system for reaction of a nucleic acid comprising: a reaction unit comprising: a nucleic acid probe array substrate having nucleic acid probes immobilized in an array on a surface of the substrate: a cover member for forming a chamber with said probes immobilized on said surface, wherein a liquid can be filled into the chamber so as to apply said liquid to each of said probes; a heat conduction member for improving thermal diffusion in the liquid within said chamber, the heat conduction member being in contact with said substrate or said cover member with their contacting surfaces being flat and having no recesses; and a temperature control block for controlling the temperature of said heat conduction member, wherein said temperature control block includes a plurality of holes at a contact portion for inserting microtubes thereinto, and wherein said heat conduction member being for filling the plurality of holes at the contact portion of said temperature control block including a plurality of legs and each of the plurality of legs of said heat conduction member is adapted to be inserted into and in close contact with each one of the plurality of holes at the contact portion of said temperature control block, which is located on a back surface of said substrate, and the temperature control block being in contact with said substrate or said cover member.