| 摘要 |
<p>An assay for detecting an analyte in a biological sample. The assay comprises a surface probe linked to the surface of a measuring electrode and the surface probe has a nucleic acid sequence complementary to a first target nucleic acid sequence. The assay also comprises a signal probe, having a nucleic acid sequence complementary to a second target nucleic acid sequence and a binding element capable of binding a ligand. The ligand is associated with a catalytic element or precursor thereof capable of reacting with a substrate to alter electrical potential of the measuring electrode.</p> |
