Figure 4From: Uptake and fate of surface modified silica nanoparticles in head and neck squamous cell carcinomaTime dependent uptake of Ru@SiO 2 -NH 2 nanoparticles. Ru@SiO2-NH2 nanoparticles uptake over 2 h (A and B) and 24 h (C and D) in UMB-SCC 745. A, C: confocal laser scanning microscopy, showing nuclei in blue and Ru@SiO2-NH2 nanoparticles in red, scale bars = 20 μm. B, D: transmission electron microscopy, scale bars = 10 μm.Back to article page