Figure 8From: Uptake and fate of surface modified silica nanoparticles in head and neck squamous cell carcinomaCo-localisation of Ru@SiO 2 -OH and Ru@SiO 2 -NH 2 nanoparticles with early endosomes. Confocal laser scanning microscopy pictures showing a partial co-localisation after 2 h of incubation of Ru@SiO2-OH (A, in red) or Ru@SiO2-NH2 (B, in red) fluorescence with immunosignals for early endosomes protein 1 (A, B, in green). Cell nuclei are stained in blue. Arrows denote large early endosomes, which contain high amounts of nanoparticles. Scale bars = 30 μm.Back to article page