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In this investigation, drug delivery characteristics of incorporating CS and anhydrous tri-polyphosphate (TPP) into SF in fabricating microparticles by a spray-dried technique were examined. Among various formulas, SF/CS microparticles at 10/4.0 (weight ratio) had the highest positive zeta potential (23.0±3.60mV (n=3)) while SF ones showed a negative zeta potential (−14.7±1.5mV (n=3)). The equilibrium...
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