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Mesenchymal stem cells culture and expansion. A: Isolated mesenchymal stem cells (MSCs) from the Wharton’s jelly of umbilical cord presented a fusiform, fibroblast-like morphology in culture (magnification: 100 ×); B: Selected metaphases from MSCs in culture, showing normal number of chromossomes (46, XY) (magnification: 1000 ×).
