Fig. 3From: Dancing in local space: rolling hoop orbital amplification combined with local cascade nanozyme catalytic system to achieve ultra-sensitive detection of exosomal miRNAFeasibility of developed ECL biosensor. A The ECL biosensor signal generation pathway. B EIS and (C) CV of different modified electrodes in 5 mM [Fe(CN)6]3−/4− solution containing 0.1 M KCl: (a) bare electrode; (b) Cu2O/Au; (c) P probe; (d) MCH; (e) RHOA products; (f) Fe-Zr MOF /luminol/G4/T. D The ECL signal for constructed biosensor in the detection solution containing 100 mM glucose without (a) and with (b) exo-miRNA-15a-5pBack to article page