“…One is the adipose tissue-derived stem cells (ASCs, mainly as CD34+-rich ASCs): a subtype of mesenchymal stem (stroma) cells (MSCs), which possess differentiation ability, in vitro expansion, release of trophic materials, as well as angiogenic, antiapoptotic, and immune-modulatory properties. 14 In fact, nanofat is one of the richest sources of ASCs and other progenitor cells, and all are the critical component for the success of repair, healing and regeneration. 15 The other is to establish vascular and naive cellular matrix (a potential back-bone structure as ECM, microvascular fragments [MCFs, containing fragments of arterioles, venules, and capillaries identified by cluster of differentiation 31 [CD31 or platelet endothelial cell adhesion molecule-1] and α-smooth muscle actin, vascular endothelial growth factor [GF], platelet-derived GF, hepatocyte GF, hepatocyte GF, transforming GF-β, basic fibroblast GF, insulin-like GF 1, and granulocyte-macrophage colony-stimulating factor] and possible various pockets of GFs, cytokines, adipokines, and transcriptional factors [lipoxin, resolvins, protectins, neurotrophic factors, angiogenin, matrix metalloproteinase 9, leukemia inhibitory factor, macrophage migration factor, bone marrow protein 2, 4, and interleukin 1RA, 4, 8, 10, 11, and 13] which altogether from secretomes).…”