Wound healing with “spray-on” autologous skin grafting (ReCell) compared with standard care in patients with large diabetes-related foot wounds: an open-label randomised controlled trial – PubMed

There is an urgent need for interventions that improve healing time, prevent amputations and recurrent ulceration in patients with diabetes-related foot wounds. In this randomised, open-label trial, participants were randomised to receive an application of non-cultured autologous skin cells (“spray- …
— Read on pubmed.ncbi.nlm.nih.gov/34156758/

There was no difference in healing between active and control in this study of relatively large (8+cm2) DFUs. Only BMI and plantar wounds were factors associated with poor healing.