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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Small. 2019 May 8;15(25):e1901397. doi: 10.1002/smll.201901397

Figure 4. Degradation analysis in vitro of PLGA HOPMs in PBS (pH-7.4, replenished every week) for a 7-week incubation period.

Figure 4

A) SEM images showing the degraded surfaces of microcarriers over the analysis period (inset showing the respective complete microcarrier, arrows indicating the fragmented interconnecting windows). Graphical representation illustrating the changes in B) the pH value of the buffer and C) the residual mass of PLGA HOPMs. ****P<0.0001