Patent ID: 7348147

Claim:
A method of detecting nucleic acids comprising: suspending at least one target nucleic acid in a suspending solution containing polymeric particles attached to a probe, wherein said probe has specific affinity for said target nucleic acid; adding a recognition unit-peroxidase conjugate marker to said suspending solution, wherein the recognition-unit peroxidase conjugate associates with said target nucleic acid; forming a complex of said polymeric particles attached to a probe, said target nucleic acid and said recognition unit-peroxidase conjugate marker in said suspending solution; contacting the suspending solution containing said complex with a gelatin surface; adding a developer comprising hydrogen peroxide to said suspending solution containing said complex in contact with said gelatin surface in the presence of phenol to attach said complex to said gelatin surface; washing said gelatin surface; and detecting said complex attached to said gelatin surface.