Grapefruit Derived Extracellular Vesicles as a Promising Cell-free Therapeutic Tool for Wound Healing Due to the prevalence of individuals suffering from chronic wounds, developing safe and effective wound care agents is one of the more prominent fields of research in biology. However, wound healing is a complex, multi-stage biological process, involving multiple a sequence of biological responses from different types of cells, secreted mediators, and extracellular matrix elements.