HYDRIDISATION ASSAY AND REAGENTS

摘要

An assay for a target nucleotide sequence in a sample, comprises bringing into contact with the sample first and second nucleotide probes respectively labelled with first and second enzymes of a channelling pair, and wherein the probes hybridize at closely adjacent sites on the target sequence in such a way that the two enzyme labels are brought into juxtaposition, and introducing the materials (excluding substrate for the second enzyme that is formed by the first enzymic reaction) which allow the enzymic reactions to run, thereby generating a detectable signal in the presence of the target but not in its absence.