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. 2017 Feb 22;12(2):e0172642. doi: 10.1371/journal.pone.0172642

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© 2017 Choi et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 4 — Scale bar: 200 μm. (A) Adipogenic differentiation was confirmed by Oil Red-O staining of intracytoplasmic lipid droplets. (B) Chondrogenic differentiation of mesenchymal stem cells indicated by Safranin O staining. (C) Chondrogenic differentiation of mesenchymal stem cells indicated by positive type II collagen staining. (D) Osteogenic differentiation indicated by positive staining for alkaline phosphatase activity. (E) Osteogenic differentiation indicated by positive Alizarin Red-S staining.