Table 1.

CD34 + cells—revised after reference [3].

Cell Type	Differentiation Potential	Morphology	Other Markers
Hematopoietic stem/progenitor cells	−Hematopoietic cells −Hepatocytes −Cardiomyocytes	−Large nucleus −Little cytoplasm −High proliferative capacity	−HLA-DR −CD38 −CD117 −CD45 −CD133
Multipotent stromal cells (MSCs)	−Adipocytes −Chondrocytes −Myocytes −Osteoblats −Angiogenic	−Small cell body −Large round nucleus −Presence of chromatin particles	−Stro-1 −CD73 −CD90 −CD105 −CD146 −CD29 −CD44 −CD271
Muscle stem cells	−Myocytes −Adipocytes −Chondrocytes −Osteoblats	−Presence of myofibril bundles −Large nucleus −Little cytoplasm	−CD56 −Myf5 −Desmin −CD90 −CD106 −Flk-1 −VEGFR −Myod −CD146
Fibrocytes	−Fibroblasts −Adipocytes −Osteogenic, −Osteoblats	−Small spindle shape −Moderate amount of cytoplasm −Small and elongated nucleus	−CD45 −CD80 −CD86 −MHC class I and II
Endothelial cells	−Angiogenesis	−Elongated with filopodia −Lack tight junctions	−CD146, −VE-cadherin −CD133, −CD117, −CD14, −CD31
Interstitial cells	−Unknown	−Triangular or spindle-shaped −Large nucleus −Long cytoplasmic processes	−CD117 −Vimentin −Desmin −Connexin-43 −Pdgfrb

Abbreviation list: ALDH (aldehyde dehydrogenase), CD (cluster of differentiation), CFU-F (colony forming units fibroblast), Flk-1 (fetal liver kinase-1), HF (hair follicle), HLA-DR (human leukocyte antigen-DR), HSC (hematopoietic stem cells), MSC (multipotent mesenchymal stromal cells), Myf5 (myogenic factor 5), MyoD (myogenic differentiation 1), MHC (major histocompatibility complex), PDGFRβ (platelet derived growth factor receptor β), and VEGFR (vascular endothelial growth factor receptor).