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Characterization of Co-PoP liposomal delivery device. (A and B) HPLC analysis of Co-PoP (A) and the resulting mass spectrum (B). (C) Liposome-binding analysis for all proteins used in the study. (D and E) Particle diameter (D) and zeta potential (E) of liposomes formulated with 0, 5, and 15 μg of PspA.
