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Stem-cell characterization of the human dental pulp cells. Cells cultured for passages of 3-4 were gathered and analyzed. Major population of cells maintained the characteristics of stem cells. (a) Fluorescence images of cells expressing SSEA4 and STRO-1 and (b) FACS analysis, presenting the percentages of cells that were immunoreactive with anti-SSEA4 and STRO-1.
