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Article History

Received: 13 November 2024

Accepted: 20 January 2025

First Online: 1 February 2025

Declarations

:

: The authors declare no competing interests.

: This project (title: Research on MSC-EVs and UCB-EVs Promoting Skin Wound Healing and Reducing Scar Formation) were approved by the Animal Research Committee of Henan Agricultural University and all animals were maintained in a specific pathogen-free animal facility according to the related ethical regulations instilled at Henan Agricultural University and the guide for the care and use of laboratory animals. (Name of the institutional approval committee or unit: Science Ethics Committee of Henan Agricultural University; Approval Number: HNND2024092901; Approval Date: 4 March 2023). The mesenchymal stem cells supernatant and cord blood used in this study were provided by Henan Yinfeng Bioengineering Technology Co., LTD. The project (Title: Henan Cell and Tissue Human Genetic Resources Bank Preservation / Biobank) has been approved by the Medical Ethics Committee of Nanyang First People’s Hospital. (Name of the institutional approval committee or unit: Medical Ethics Committee of Nanyang First People’s Hospital; Approval Number: [2023-yx111z] 0621-01; Approval Date: June 19, 2023).

: Written informed consent for publication was obtained from all participants.

: The authors declare that they have not use AI-generated work in this manuscript