Extracellular vesicles modulate key signalling pathways in refractory wound healing.

"Conflict of interests The authors declare that they have no competing interests or connections, direct or indirect, that might raise the question of bias in the work reported or the conclusions, implications or opinions stated in this review. The authors have no pertinent commercial or other sources of funding for the individual author(s) or for the associated department(s) or organization(s), personal relationships, or direct academic competition related to this review. The authors have followed the guidelines of the journal for writing a conflict of interest statement and have obtained the relevant information from all co-authors."

"This work was supported by grants from the National Natural Science Foundation of China (81902784), the CAMS Innovation Fund for Medical Sciences (CIFMS, 2019-I2M-5-004), Fund of Sichuan Provincial Department of Science and Technology (2022YFSY0058), the Research Funding (RCDWJS 2020-20), Research and Development Program (RD-02-202002) from West China School/Hospital of Stomatology Sichuan University. Conflict of interests: The authors declare that they have no competing interests or connections, direct or indirect, that might raise the question of bias in the work reported or the conclusions, implications or opinions stated in this review. The authors have no pertinent commercial or other sources of funding for the individual author(s) or for the associated department(s) or organization(s), personal relationships, or direct academic competition related to this review. The authors have followed the guidelines of the journal for writing a conflict of interest statement and have obtained the relevant information from all co-authors."