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Fig. 6 | Journal of Nanobiotechnology

Fig. 6

From: A nitroxides-based macromolecular MRI contrast agent with an extraordinary longitudinal relaxivity for tumor imaging via clinical T1WI SE sequence

Fig. 6

Fluorescence images of 4T1 cells incubated with Linear pDHPMA-mPEG-Ppa-PROXYL for 1 h, 2 h, and 6 h. Linear pDHPMA-mPEG-Ppa-PROXYL (red fluorescence) was completely distributed in the cytoplasm without entering the nucleus (blue fluorescence), and the cellular uptake of this mORCA by 4T1 cells was a time-dependent process. Scale bar: 25 μm

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