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Effect of protein size on diffusion through PEG hydrogels: (a) fractional release over time, (b) fractional release (Mi /Minf ) as a function of t1/2, (c) normalized diffusion coefficients (De /Do ). Mi is the released solute at time i and Minf is the concentration of solute at infinite time. De is the effective diffusion coefficient and Do is the maximum diffusion coefficient.
Reproduced with permission from [223]. Copyright 2010 John Wiley and Sons.
