Fig. 1
From: Ratiometric electrochemical OR gate assay for NSCLC-derived exosomes
Principle of the ratiometric electrochemical OR gate assay for non-small cell lung cancer (NSCLC)-derived exosomes. A Exosomes captured by specific aptamers. B Coupling ratiometric electrochemical biosensor with OR logic gate for exosome detection. C Workflow of serum exosome detection for the diagnosis, staging, and prognosis of NSCLC cohort. Abbreviations: gold nanoparticle (GNP); Aptamers (Apt1/Apt2); Block strands (B1/B2); DNA tetrahedron (T1/T2); Reference electrode (RE); Counter electrode (CE); Working electrode (WE)