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Detection of UC exosomes by peak force AFM imaging in fluid; (a) representative topographic image of UC exosomes. UC exosomes showed a single Gaussian population in fluid imaging; (b) close-up of UC exosomes showing a diameter of 49 ± 9 nm and a height of 7.8 ± 2.8 nm; (c) the cross-section of (b) shows UC exosome dimensions of approximately 60 nm in diameter and with a height of 10 nm.
