Are Mesenchymal Cells Indeed Pluripotent Stem Cells or Just Stromal Cells? OCT-4 and VSELs Biology Has Led to Better Understanding

<table>Immunolocalization of OCT-4 in MSCs and VSELs in human umbilical cord tissue sections and mouse bone marrow smears. Note that the round spherical VSELs have nuclear OCT-4, whereas the MSCs have cytoplasmic OCT-4. </table>

Stem Cells International

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Figure 2: Are Mesenchymal Cells Indeed Pluripotent Stem Cells or Just Stromal Cells? OCT-4 and VSELs Biology Has Led to Better Understanding 