Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
T2-weighted MR images (a) and MR signal/noise ratio (c) of orthotopic 4T1 breast tumor after intravenous injection of PEGylated MnFe2O4 NPs (white arrows refer to tumor regions). (b) Tumor enlarged MR images at before injection and 3 h postinjection (boxes refer tumor edges).
