Fig. 4
From: Affordable ultrasensitive electrochemical detection of PCA3 for early prostate cancer diagnosis
(A) Voltammogram showing the responses generated by Au-GQD/SPE/Target. (B) Calibration curve of Au-GQD/SPE/Target obtained from CV analysis. (C) Nyquist plot of Au-GQD/SPE/Target at different concentrations. (D) Calibration curve of Au-GQD/SPE/Target derived from electrochemical impedance spectroscopy (EIS).
