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(A) Zeta potential and (B) particle size of the blank Lip, PHCL NPs and PHCL-Lip; (C) Zeta potential of PHCL-Lip and P-Lip at different pH; (D-E) The size distribution and TEM images of PHCL-Lip under different pH and redox conditions; (F) In vitro ETO release profiles from PHCL-Lip/ETO and ETO injection when exposed to different pH and redox stimuli.
