Fig. 3From: Exosomes play an important role in the process of psoralen reverse multidrug resistance of breast cancerDifferent amounts of formation and secretion of exosomes in MCF-7, MCF-7/ADR and MCF-7/ADR + psoralen cells. a Transmission electron micrographs of exosomes structures (25,000×). b Confocal images of immunostaining for exosomes CD63 expression in MCF-7/ADR and MCF-7/ADR + psoralen cells. Scale bars, 50 μmBack to article page