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. Author manuscript; available in PMC: 2016 Sep 9.
Published in final edited form as: J Am Chem Soc. 2015 Aug 31;137(35):11210–11213. doi: 10.1021/jacs.5b05650

Figure 3.

Figure 3

(a) T2-weighted MR images of the Apt-tet-IONPs in aqueous solution at different iron concentrations. (b) Corresponding T2 relaxation rate of the Apt-tet-IONPs as a function of iron concentrations. (c) T2-weighted MR images of MCF-7 and L02 cells (5 × 105 cells) incubated with Apt-tet-IONPs at different iron concentrations.