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. Author manuscript; available in PMC: 2013 Nov 5.
Published in final edited form as: Mol Pharm. 2012 Apr 23;9(5):10.1021/mp200608y. doi: 10.1021/mp200608y

Figure 2.

Figure 2

Processed confocal images of microspheres encapsulating dye only (A); dye and BSA of pH of 3 (B); dye and BSA of pH of 4 (C); dye and BSA of pH of 5 (D); and dye and BSA of pH of 7 (E) after incubation at 37°C in PBST buffer for 1 day. The μpH was controlled by the inner water phase pH, as described in Materials and Methods.