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. Author manuscript; available in PMC: 2014 Jan 12.
Published in final edited form as: J Control Release. 2012 Oct 24;165(1):62–74. doi: 10.1016/j.jconrel.2012.10.012

Fig. 1.

Fig. 1

Active self-healing encapsulation of tetanus toxoid (TT) in PLGA microspheres. The surface morphology of 3.2 wt% Al(OH)3-PLGA-3.5 wt% trehalose-5 wt% diethyl phthalate microspheres (ASM-1, Table 1) before and after active self-healing encapsulation of TT.