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Results of transmission electron microscopy (TEM). Urinary EV (uEV) samples were obtained by five different purification methods: spin column chromatography (A), immunoaffinity (B), precipitation (C), membrane affinity (D) and ultracentrifugation combined with density gradient (E). Images represent wide field and clos-ups (boxes at the lower left) of operator selected locations. Scale bar is the same for all images and represent 100 nm.
