Small extracellular vesicles purification and scale-up.

"Conflict of interest Author WF is a shareholder at Fahe Life Science and Technology Inc. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest."

"The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This study was supported by the National Natural Science Foundation of China (grant numbers 82322055, 81773261, 31970882, 81903140, 82041012 and 92169115); the Shanghai Rising-Star Program (grant number 19QA1411400); the Shanghai Sailing Program (19YF1438600); the Shanghai Chenguang Program (grant number 17CG35); and the Shanghai Biomedical Technology Support Project (20S11906600) and the Open Project Grant from Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University."