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Mice bearing A549 xenografts on the right shoulder (dashed blue ovals) were injected with (A) dye (DiR) alone, (B) dye-labeled vesicles derived from HEK cells, (C) dye-labeled vesicles derived from A549 cells, and (D) dye-labeled vesicles derived from RAW264.7 cells demonstrating RAW vesicles specifically targeted the A549 xenograft. Free domain photograph courtesy of JRM.
