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Characterization of canine OC-EVs. (a) Morphological characterization of EVs isolated from in vitro cultured oviduct cells using transmission electron microscopy (Scale bar = 100 nm). Black arrows indicate EVs. (b) Characterization of EVs regarding particle size, concentration, and relative intensity using a nanoparticle tracking analysis (NTA). Data are shown as means ± standard error of the mean. OC-EVs: canine in vitro oviductal cell-derived extracellular vesicles.
