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Ex vivo fluorescence imaging of exosomes in the colon; the CCL1 protein in exosomes was detected by western blotting. (A) Ex vivo fluorescence imaging of the distribution of DiR labeled exosomes in the colon. (B) Western blotting analysis of CCL1 protein expression in exosomes purified from various macrophage phenotypes, exosome marker CD63 used as internal reference.
