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. 2015 Jul 2;10:4279–4291. doi: 10.2147/IJN.S85095

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© 2015 Li et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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T₂-weighted MR images and quantitative signal intensity analysis of Fe₃O₄@SiO₂/PEI/VEGF shRNA.

Notes: (A) T₂-weighted MR images and color T₂-weighted MR images of Fe₃O₄@SiO₂/PEI/VEGF shRNA. The weight ratio of Fe₃O₄@SiO₂/PEI to VEGF shRNA is 40:1. (The color bar from red to blue shows the gradual decrease of MR signal intensity.) (B) Quantitative signal intensity analysis. *P<0.05 and **P<0.01 compared with the control (0 μg/mL).

Abbreviations: MR, magnetic resonance; PEI, polyethylenimine; shRNA, small hairpin RNA.