Abstract:We describe a novel assay for detection of point mutations. The method combines the specificity and sensitivity of the polymerase chain reaction (PCR) and allele-specific oligonucleotides (ASO) with highly sensitive time-resolved fluorometry. ASO probes differing by a single base substitution and labeled with europium (Eu) chelates were hybridized in solution simultaneously with a biotinylated oligomer to a PCR-amplified nucleic acid fragment. The hybrids formed were then collected onto streptavidin-coated mic… Show more
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