Template-directed ligation and amplification assay
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United States of America Patent
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Nov 11, 1997
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N/A
app pub date -
May 8, 1995
filing date -
Jan 13, 1988
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Abstract
A method for the detection of a target polynucleotide sequence wherein the target polynucleotide sequence is used as a template to direct hybridization of first and second polynucleotide probes to contiguous portions of the target. The hybridized probes are then ligated, preferably by covalent linkage of photoreactive functional groups present on each of the probes, to produce a ligated reaction product. The ligated reaction product is then multiplied with a polymerase such as Q-beta replicase to produce an enzyme reaction product which is then detected. The presence of the enzyme reaction product is indicative of the presence of the target polynucleotide sequence.
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