Comparison of cell phenotype between CD34+ amnion membrane-derived stem/progenitor cells and CD34− amnion membrane-derived stromal fibroblast cells. Flow cytometry analysis of common mesenchymal stromal cell makers (CD29, CD44, CD73, CD90, and CD105), stem cell transcription factors (Nanog and Oct-3/4), embryonic antigens (SSEA-1, SSEA-3, SSEA-4, SSEA-5, and GloboH), stem cell biomarkers (CD34, CD133, CD117, CD146, and CD201), and other cell surface markers and receptors (CD31, CD56, CD271, EGFR, and PDGFR). n = 3; ∗, p < .05. Abbreviations: CD34+, CD34+ amnion membrane-derived stem/progenitor cells; CD34−, CD34− amnion membrane-derived stromal fibroblast cells; EGFR, epidermal growth factor receptor; PDGFR, platelet-derived growth factor receptor.