Fig. 1
From: Cancer-derived exosomal miR-7641 promotes breast cancer progression and metastasis
Identification of exosomes released by different breast tumor cells. a Transmission electron microscopy analysis of exosomes isolated from conditioned media of MCF-7, HCC-1937, and MDA-MB-231 cells. b Western blotting analysis of exosomal protein markers (CD9 and CD63) in tumor cells and their respective purified exosomes. Each experiment was performed at least three independent times and results were presented as mean ± SD. Scale bar: 200 nm, ***p < 0.001 compared with their respective cells of origin