Fig. 7From: Early-stage cervical cancer diagnosis based on an ultra-sensitive electrochemical DNA nanobiosensor for HPV-18 detection in real samplesFT-IR spectra of (a) modified SPCE with l-cysteine-AuNPs and rGO-MWCNTs (b) ssDNA HPV-18 probe immobilized SPCE and (c) ssDNA hybridized SPCEBack to article page