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. 2021 Sep 16;8(6):rbab051. doi: 10.1093/rb/rbab051

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© The Author(s) 2021. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 7. — (a) SEM morphology of BMSCs attached to pTa scaffolds after 3 days of culture (marked by white arrows; scale bar = 20 μm). (b) The CCK-8 assay showed the proliferation of BMSCs after co-culture with pTa for 1, 3, 5, and 7 days. (c) Live assay of GNPs hydrogel. On day 1 of co-culture, a small number of BMSCs adhered to GNPs hydrogel. (d) On Day 3 of co-culture, the BMSCs adhered nonhomogeneous to GNPs hydrogel, and several cell aggregates were formed. (e) The trend of cell proliferation on GNPs hydrogel was evidently on Day 5 of co-culture (scale bar = 200 μm).