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In vitro drug release profiles of PQ-SLN-2, PQ-NLC-2, and PQ-NE-2 in (A) FaSSIF (pH 6.8) and (B) FaSSGF (pH 1.2). Experimental data vs. predicted data plot of (C) zero order model, (D) Higuchi model, (E) Korsmeyer-Peppas model, and (F) Hixson-Crowell model.