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A new electrochemical sequence‐specific DNA detection platform based on primer generation‐rolling circle amplification (PG‐RCA), methylene blue (MB) redox indicator, and indium tin oxide (ITO) electrode is reported. In the presence of a specific target sequence, PG‐RCA, an isothermal DNA amplification technique, produced large amounts of amplicons in an exponential manner. In addition to the standard...
We report a simple method of enhancing the chemical stability of monothiol-modified oligonucleotide-gold and -silver nanoparticle conjugates by a thin silica reinforcement coating. Conventional conjugates prepared by chemisorption of monothiol-modified oligonucleotides onto nanoparticle surfaces undergo rapid aggregation in the presence of thiol-containing small molecules (e.g., dithiothreitol) due...
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