Figure 1. Characterization of exosomes isolated from the plasma of sevoflurane-induced post operative cognitive dysfunction (POCD) patients or non-POCD patients. (A) The morphology of exosomes was visualized using a transmission electron microscopy. A NanoSight NS300 particle size analyser was used to analyze the particle size of the exosomes isolated from the plasma of sevoflurane-induced non-POCD patients (B) and POCD patients (C). (D) The expression of exosomes-specific markers TSG101, CD9 and CD81 examined by western blot.