HYBRIDISATION METHOD AND PROBES THEREFOR

摘要

A method for discriminating between two complementary nucleotide sequences differing by as little as 1-3 nucleotides is described in which an oligonucleotide signalling complex probe is used, which probe comprises a single stranded oligonucleotide of 8 to 30 nucleotide units having covalently attached thereto, at a sterically tolerant site, a residue capable of producing a non-radioisotopic signal and having a molecular weight of at least 100 daltons. Oligonucleotide signalling complex probes and diagnostic kits for use in such a method are described and claimed.