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Fig. 1 | Immunity & Ageing

Fig. 1

From: Ageing attenuates bone healing by mesenchymal stem cells in a microribbon hydrogel with a murine long bone critical-size defect model

Fig. 1

Animal model and surgical procedure and protocol. A A model of the external fixator and µRBs. B Bone defect of 2 mm. C Implantation of a µRBs scaffold with or without MSCs with an external fixator. D Postoperative condition of the femur. E Surgical protocol. Sc-only and Sc + MSCs groups were implanted on day 0, while the IL4-MSCs group was implanted on day 3 after generation of the surgical defect

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