Fig. 2From: Localized DNA tetrahedrons assisted catalytic hairpin assembly for the rapid and sensitive profiling of small extracellular vesicle-associated microRNAsA DPV analysis and B Fluorescence kinetics monitoring of LDT-CHA and DT-CHA. C Comparison of the reaction space and local concentration of traditional CHA and DT-CHA (upper), DT-CHA and LDT-CHA (lower). D The scheme of LDT-CHA with different distance of hairpins and Tetrahedrons. E Signal-to-noise ratio of the LDT-CHA with different hairpins distance in the presence of 10Â nM miR-1246. F Signal-to-noise ratio of the LDT-CHA with different tetrahedrons distance in the presence of 10Â nM miR-1246Back to article page