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Ectopic osteogenesis of core-shell microtissues. (A, B) TEBGs of different groups were put inside PDMS chambers fixed on the back of rat, then covered with subcutaneous tissue. (C) Reconstructed micro-CT images of specimens after 4 weeks implantation. (D, E) Quantitative analyses of the BV and BV/TV ratio of different group of explants after 4 weeks implantation. (***: p < 0.001).
