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. 2021 Jan 19;4:89. doi: 10.1038/s42003-020-01576-y

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© The Author(s) 2021

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Fig. 1 — a In vitro maturation, b in vivo implantation (subcutaneous), and c in vivo implantation (orthotopic) of hMSC tubes containing morphogen-loaded microparticles.