Carbon Material Hybrid Construction on an Aptasensor for Monitoring Surgical Tumors

Figure 4

(a) CEA identification by sandwich assay with aptamer. Various concentrations of CEA were diluted in PBS and drop cast onto the anti-CEA aptamer-constructed electrode surface, and then, a fixed concentration of detection aptamer was added. A clear increase in the response was recorded for each CEA concentration. (b) Electrochemical response for CEA identification. The electrochemical response is increased by increasing the CEA concentration. The averaged values obtained from the replicates are displayed by the error bars.

(a)

(b)