Figure 1. Evaluation of the binding affinity of EAA to exosomes from different sources.
(A) Predicted secondary structure of EAA and CD63 aptamer with UNAFold. (B) Measurement of binding affinity of EAA and CD63 aptamers to murine myotube-derived exosomes with flow cytometry. (C) Representative images and quantitative analysis for single exosomes bound with EAA (n = 1193) or CD63 (n = 221) aptamers via super-resolution microscopy (scale bar = 50 nm). Murine myotube-derived exosomes were stained with CD63, CD81, or CD9 antibodies and EAA or CD63 aptamers were labeled with FITC.