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. 2021 May 18;16:3473–3485. doi: 10.2147/IJN.S301470

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© 2021 da Silva Brum et al.

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Photomicrographs of MMP-9 immunostained slides, with a light brown color indicating MMP-9. (A) bone defects filled with hydroxyapatite; (B) bone defects filled with nano-hydroxyapatite/ß tricalcium phosphate; (C) defect without biomaterial (control). Scale bar 100 µm, X 400 magnification.