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.
(a) MnZnSPIONs are monodisperse with a core size of 13.3 ± 1.6 nm based on transmission electron microscopy (b). (c) After PEG-ylation, the MnZnSPIONs have a hydrodynamic size of approximately 21 nm. (d) SQUID measurements show particles with a small hysteresis loop.
