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Abstract
AbstractThe short sequence related to hepatitis C virus (HCV1) is detected by a label‐free DNA hybridization biosensor. The sensor relies on the immobilization of a 20‐mer oligonucleotide containing 2 guanine and 11 cytosine bases denoted PHCV1 as probe on the pencil graphite electrode (PGE). The hybridization event was monitored by differential pulse voltammetry (DPV) using the guanine signal. The selectivity of the biosensor was studied using some noncomplementary oligonucleotides. Diagnostic performance of the biosensor is described and the detection limit was found to be 6.5 nM.
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