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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: Biomaterials. 2011 Jul 26;32(31):7774–7784. doi: 10.1016/j.biomaterials.2011.06.075

Fig. 4.

Fig. 4

UV-Vis spectra of (e-PEI/Alg)50 on quartz slides A) unannealed film in PBS and B) film after salt annealing in salt annealing solution. Insert shows the appearance of the films.