Fig. 2

a NTA analysis of exosomes isolated from MDA-MB-231, HeLa, HCT116, and MCF7 cells by different recovery methods (Dyna Beads_CD9, Dyna Beads_CD81, CD9_MNWs, CD81_MNWs, and Abs_MNWs), where the amount of antibodies directly conjugated to Dyna Beads or MNWs is equivalent to 200 pg/mL. b ELISA results indicating that exosomes recovered from Abs_MNWs showed higher levels of CD9/CD81-specific exosomes as compared with Dyna Beads. c Concentration of total proteins in exosomes isolated from MDA-MB-231, HeLa, HCT116, and MCF7 cells by the other recovery methods. d Representative size distribution of exosomes isolated using Abs_MNWs (manually determined from electron micrographs)