Toshihiro Ihara, Masamichi Nakayama, Mitsuru Murata, Koji Nakano and Mizuo Maeda
An electrochemical gene sensing system has been developed using a redox-active ferrocene-modified oligonucleotide and an oligonucleotide anchored on a gold electrode, both of which formed a sandwich-type ternary complex with the target DNA to give a redox current.