Confocal microscopy analysis of PKH26-labeled BMSC-EVs localization in colon after injection.

<p>The localization was measured 12h after intravenous injection. (A-I) Representative micrograph of inflammatory colon with the treatment of PKH26-labeled BMSC-EVs (red) at the dose of 50, 100 and 200μg. In merge images, nuclei were stained with DAPI (blue). Original magnification×200.</p>