“…The composition of the harvested fat is a heterogeneous cell subpopulation, such as adipocytes, adipose-derived stem cells, monocytes and macrophages, extracellular matrix components, pericytes, endothelial cells, and erythrocytes. In general, this component could promote revascularization, activate local stem cell niches, modulate immune responses via paracrine secretion of numerous bioactive molecules, promote wound healing, and exhibit antiinflammatory activity [16]. In fact, during the last few years, surgeons and scientists have studied different protocols to manipulate fat and inject the respective fat-derived product without immune-inflammatory reactions [17].…”