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Morphology of neural stem cells. (A) Rat mesenchymal stem cells were cultured for 2 days. Adherent cells extended and became spindle-shaped. (B) Rat mesenchymal stem cells were cultured for 7 days and grown around a clone. (C) The 3rd passage of mesenchymal stem cells fused together and became arranged in a bunched or radiating shape. Scale bar, 50 μm.
