Fig. 2: Electrochemical sensor for detecting CTCs.
From: Current research status of tumor cell biomarker detection
a A label-free electrochemical immunosensor for the detection of EpCAM overexpression in hepatocellular carcinoma cell lines42. Copyright 2019 MDPI. b Enzyme-free sandwich-type electrochemical sensor for detection of CTCs43, Copyright 2021 Elsevier. c Electrochemical aptamer sensor based on a dual-signal amplification strategy for the detection of CTCs44. Copyright 2021 Elsevier. d Electrochemical sensor based on dual recognition of anti-EpCAM antibody and anti-MUC1 aptamer46. Copyright 2021 Elsevier
