科研之友
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摘要
We report a convenient strategy to prepare ultrasmall Fe3O4 nanoparticles (NPs) coated with zwitterion L-cysteine (Cys) for enhanced T-1-weighted magnetic resonance (MR) imaging applications. The formed Fe3O4-PEG-Cys NPs possess antifouling properties, good r(1) relaxivity, excellent cytocompatibility and hemocompatibility, and can be used as a contrast agent for enhanced blood pool and tumor MR imaging.
