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SEM images of the scaffolds after immersion in the SBF. (A) CNTT–BGN in SBF for 7 days; (B) CNTT–HA in SBF for 7 days; (C) CNTT–BGN/HA in SBF for 7 days; (D) CNTT–BGN in SBF for 14 days. SEM images plus EDS results (Supporting Information, Figure S1) confirm the formation of biomineralized hydroxyapatite.
