Carbon Material Hybrid Construction on an Aptasensor for Monitoring Surgical Tumors

Figure 1

Graphical demonstration of the CEA aptasensor. A potassium hydroxide-treated electrode was constructed using COOH-activated graphene, and then, the anti-CEA aptamer was covalently immobilized onto the electrode surface through COOH with NH2. BSA was added to cover the excess activated surface, and then, the CEA was detected by the immobilized aptamer.