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. Author manuscript; available in PMC: 2014 Dec 9.
Published in final edited form as: Pharm Res. 2009 Jun 16;26(8):1986–1994. doi: 10.1007/s11095-009-9914-2

Figure 3.

Figure 3

Scanning electron micrographs of microspheres prepared without salt (A, Formulation 1), and adding 25 mg NaCl (B, Formulation 2), CaCl2 (C, Formulation 3) and MnCl2 (D, Formulation 4) to the organic phase.