Fig. 2From: Mesoporous Silica Nanoparticle–Based Combination of NQO1 Inhibitor and 5-Fluorouracil for Potent Antitumor Effect Against Head and Neck Squamous Cell Carcinoma (HNSCC)In vitro release of 5-FU and ß-lap from FNQ-MSN in pH 7.4 and pH 5.0 buffer conditions. The release study was continued until 72 h, and drug release was quantified using HPLC method. **p < 0.01Back to article page