Flow cytometric analysis of DAF, MIRL, LFA-3, and AChE expression on human exosome-bead conjugates. Staining for DAF/MIRL/LFA-3 (A) and AChE (B) was performed as detailed in Materials and Methods. Labeling only with the respective FITC-conjugated anti-IgG was used as background staining. Typical labeling patterns obtained from the same preparation of exosome-bead conjugates are presented.