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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: Adv Drug Deliv Rev. 2013 Apr 24;65(8):1020–1030. doi: 10.1016/j.addr.2013.04.014

Figure 5.

Figure 5

ESI mass spectra of Tf/TfR (top) and LzT/TfR (bottom) mixtures acquired under near-native conditions (3 μM of each protein in 20 mM ammonium acetate at pH 7.1). Peak labels represent the charge states of all relevant ions. The inset shows a mass spectrum of LzT spiked with intact Tf. Adapted with permission from (70).