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Flow cytometry of undifferentiated MSCs of the third passage for CD29(A), CD34(B), CD44(C), CD45(D), CD73(E), CD90(F), CD105(G), CD166(H) and HLA-DR(I). Red curves indicate positive staining in the sorted population. Empty curves indicate negative background staining. MSCs: mesenchymal stem cells. (Color figure online)
