Fig. 4From: Using superparamagnetic iron oxide nanoparticles to enhance bioavailability of quercetin in the intact rat brainHPLC analyses for the identification of quercetin in rat plasma after oral administration of quercetin and quercetin conjugated Fe3O4 nanoparticles in Wistar rats. a Quercetin standards. Different serial dilutions are shown: 0.6 μg/ml (black), 0.2 μg/ml (blue), 0.1 μg/ml (red), and 0.05 μg/ml (green). The inset shows the calibration curve (Peak area vs. Concentration). b free QT, and c QT-SPIONs, and d comparison of the concentration of free QT with QT-SPIONs. All values reported are mean ± SEM (n = 6). [* for p < 0.05, ** for p < 0.01 and *** for p < 0.001]. QT, quercetin; h, hoursBack to article page