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. Author manuscript; available in PMC: 2009 Jun 8.
Published in final edited form as: Adv Drug Deliv Rev. 2007 Aug 25;59(14):1392–1412. doi: 10.1016/j.addr.2007.04.021

Figure 1.

Figure 1

Field-emission scanning electron microscopic images of lecithin fibers prepared at different solution concentrations (from below to above the critical concentration for entanglement). (From Ref. [77] with permission)