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Physicochemical characterization of the 3D printed scaffolds at various time points. (A) Gross and microstructural analysis (using SEM) of the 3D printed annular ring scaffolds showing average pore diameters at various time points. (B) Average pore diameters of scaffolds at varying time points in the culture. (C) ATR-FTIR of the 3D printed scaffolds on days 3 and 21 showing minimal chemical degradation of the scaffolds.
