Stage-specific embryonic antigen 4 (SSEA-4) is a glycolipid epitope that is found on undifferentiated human embryonic stem (ES) cells
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, induced pluripotent (iPS) cells
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embryonal carcinoma (EC) cells
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, and embryonic germ (EG)
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cells and a variety of somatic stem cells, such as dental pulp stem cells, umbilical cord blood-derived very small embryonic like stem cells (VSELs)
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and mesenchymal stromal cells
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.