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. Author manuscript; available in PMC: 2010 Sep 30.
Published in final edited form as: Biomaterials. 2008 Mar;29(9):1159–1166. doi: 10.1016/j.biomaterials.2007.11.020

Fig. 3.

Fig. 3

Alteration of SIS permeability to urea by NPs. Permeability chambers were set up by placing latex spheres (A) or PLGA NPs (B) on the mucosal side of SIS to demonstrate size-dependent and concentration dependent permeability, respectively. Zero size or zero concentration indicates permeability measured with unmodified SIS, i.e. no spheres. Results are present as mean ± standard deviation from three independent experiments. * Indicates that these results were different vs. unmodified SIS (p < 0.05).