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Magnification: 100x; Scale Bar: 100 μm. (a) OM fragment plated by the explant method after enzymatic digestion. 1 week after plating, cells with morphological characteristics of MSCs irradiating from the explant can be observed; (b)–(e): morphology of OM-MSCs in culture: (b) P2, 30–40% confluence; (c) P5, 50–60% confluence; (d) P7, 70–80% confluence, ideal moment for passage; (e) P9, 90–100% confluence.
