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Characterization of stem cell marker expression in MPCs by immunofluorescence stain: A: progenitor cells show strong cytoplasm expression of nestin in a speckled pattern. B: progenitor cells strongly expressed PAX7 in a speckled pattern. C: CD44 was weakly expressed in a perinuclear pattern. D: there was no CD34 expression in progenitor cells. Green, FITC-conjugated antibodies; red, phalloidin (actin); blue, DAPI (nuclear).
