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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: Adv Drug Deliv Rev. 2011 Aug 6;63(14-15):1282–1299. doi: 10.1016/j.addr.2011.07.001

Figure 5.

Figure 5

(A) Synthetic procedure of low and high pay load hybrid silica nanoparticle with [Ru(bpy)3]Cl2 and Gd3+. (B) TEM of above synthesized nanoparticles, showing the larger surface area of six times higher loaded gadolinium ion. The scale bar represents 200 nm (left) and 100 nm respectively. (C) Microscopic images of hybrid silica nanoparticles labeled monocyte cells: a) optical; b) laser scanning confocal fluorescence. c), d) MR images of unlabeled (left) and 1-labeled monocyte cells: c) T1-weighted and d) T2-weighted [92].