Fig. 3From: Ultrasensitive Biosensor for the Detection of Vibrio cholerae DNA with Polystyrene-co-acrylic Acid Composite NanospheresDifferential pulse voltammograms signal from AQMS of the electrodes (a) PSA-SPE, (b) PSA-AuNPs-SPE, (c) capture probe-PSA-AuNPs-SPE and when in the presence of (d) ncDNA and reporter probe, (e) mismatch DNA and reporter probe, (f) cDNA alone, and (g) cDNA and reporter probeBack to article page