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. Author manuscript; available in PMC: 2011 Sep 15.
Published in final edited form as: J Biomed Mater Res A. 2010 Sep 15;94(4):1236–1243. doi: 10.1002/jbm.a.32807

Figure 5.

Figure 5

SEM images of the pSi particles during the degradation process in PBS pH 7.2. Systems shown: a) APTES particles; b) Particles modified with PEG 861; c) Particles modified with PEG 5000. Timepoints: 2, 8, 18 and 48 hours.