A method of detecting a nucleic acid (e.g., DNA, RNA) that contains at least one preselected base (e.g., adenine, guanine, 6-mercaptoguanine, 8-oxo-guanine, and 8-oxo-adenine) comprises (a) reacting the nucleic acid with a transition metal complex capable of oxidizing the preselected base in an oxidation-reduction...http://www.google.com/patents/US5871918?utm_source=gb-gplus-sharePatent US5871918 - Electrochemical detection of nucleic acid hybridization
