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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Acta Biomater. 2017 Jun 3;58:386–398. doi: 10.1016/j.actbio.2017.06.004

Fig. 3.

Fig. 3

SEM images of (a, b) PMAA hydrogel and (d, e) BA-TPQ-hydrogel cubes which were first freeze-dried from solution (a, d) and then re-dispersed in pH = 7.4 buffer and dried again from solution (b, e). Optical microscopy images of re-dispersed (c) PMAA hydrogel and (f) BA-TPQ-hydrogel cubes in pH = 7.4 phosphate buffer.