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Fig. 1 | BMC Cancer

Fig. 1

From: The release of tryptase from mast cells promote tumor cell metastasis via exosomes

Fig. 1

Identification and characterization of A549 cell-derived exosomes. Exosomes were isolated using differential centrifugation. a The electron micrographs of the exosomes revealed rounded structures with a size of approximately 30–150 nm. The scale bar represents 200 nm. b Western blot analysis of exosomes derived from the supernatant of A549 cells shows the presence of the common exosomes proteins CD81, calnexin and TSG101. Cells were used as a control. c The sizes of exosomes derived from the supernatant of A549 cells were analyzed using nanoparticle tracking analysis

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