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. 2018 Apr 13;13(4):e0195703. doi: 10.1371/journal.pone.0195703

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© 2018 Ge et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 2 — The U251 cells labeled by Fe3O4@Au-C225 composite targeted MNPs at the concentration of 0.01mg/mL, 0.05mg/mL and 0.1mg/mL (A); The MRI of the U251 cells labeled by Fe3O4@Au-C225 composite targeted MNPs (a), Fe3O4@Au composite MNPs (b), both Fe3O4@Au-C225 composite targeted MNPs and C225 (c)(B); The T2WI relaxation time of the U251 cells labeled by Fe3O4@Au-C225 composite targeted MNPs (a), Fe3O4@Au composite MNPs(b), both Fe3O4@Au-C225 composite targeted MNPs and C225(c)(*compared with the control group, P<0.05)(C).