Carbon Material Hybrid Construction on an Aptasensor for Monitoring Surgical Tumors

Figure 3

(a) Surface functionalization for anti-CEA aptamer immobilization. The electrochemical response for each process was recorded, and the immobilization was confirmed. This increment in response clearly indicates the attachment of the anti-CEA aptamer on the electrode surface. (b) Electrochemical response for anti-CEA aptamer attachment. The difference in response is observed to be much higher after the introduction of the aptamer on the sensing electrode surface, which confirms that the surface is modified with the anti-CEA aptamer process. The averaged values obtained from the replicates are displayed by the error bars.

(a)

(b)