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(A) The viscosity of selected in situ gel formulations at 4, 25 and 37 °C and their strength at 25 °C. (B) In vitro QCT release from P407 based gels and (C) Cumulative percentage of QCT released from different formulations at 22, 95 and 142 h, in PBS supplemented with 0.7% Tween 80, pH = 6.2 at 37 °C. Abbreviations: G9: carbapol/poloxamer 407 gel, G10: chitosan/poloxamer 407 gel, QCT: quercetin, St: stearic acid, C: coated, SLNs: solid lipid nanoparticles.
