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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Biomaterials. 2015 Dec 29;82:94–112. doi: 10.1016/j.biomaterials.2015.12.025

Fig. 7.

Fig. 7

Desirable properties of an effective protein delivery system. Practically, it may be difficult to satisfy all of the desirable properties and a balance has to be made based on cost and resources.