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Hydrophilicity of the surface microstructures of (A) PLGA, P0, (B) P2, (C) P4, and (D) P8 composite scaffolds determined by contact angle test.
Notes: P2, P4, or P8 represents the PLGA scaffold coated by MBG precursor solution for 2, 4, or 8 times, respectively. P0 represents the unmodified PLGA scaffold.
Abbreviations: MBG, mesoporous bioactive glass; PLGA, poly(lactic-co-glycolic acid).
