Patent ID: 7927804

Claim:
A method of forming a signal probe-polymer comprising: reacting a plurality of pairs of oligonucleotide probes with each other to form a polymer, a first probe of the pair of oligonucleotide probes comprising three nucleic acid regions of X, Y, and Z regions, which are located in the stated order from the 5′-terminal and having a structure represented by the following chemical formula (1); and a second probe of the pair of oligonucleotide probes comprising three nucleic acid regions of X′, Y′, and Z′ regions, which are located in the stated order from the 5′-terminal and having a structure represented by the following chemical formula (2), (in the above chemical formulae (1) and (2), each of X and X′, each of Y and Y′, and each of Z and Z′ are hybridizable complementary regions), wherein each region of the oligonucleotide probes has a length of from 13 to 15 bases.