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A simple and ultrasensitive procedure for non-labeling detection of nucleic acids is described in this study. It is based on the photoelectrochemical detection of target nucleic acids by forming a nucleic acid/photoreporter adduct layer on an ITO electrode. The target nucleic acids were hybridized with immobilized oligonucleotide capture probes on the ITO… (More)
An ultrasensitive nucleic acid biosensor for the direct detection of attomoles nucleic acid in 1.0-5.0 [corrected] microl droplets is described which can be used for detection of cancer marker genes in mRNA extracted from human breast tissues without a RT-PCR step.