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.
In vitro MRI of polypeptide-SPIONs. (A) In vitro MRI images of polypeptide-SPIONs: (A–E) polypeptide-SPIONs with Fe3O4 concentration 0.060, 0.030, 0.015, 0.007, and 0.0045 mg/mL, respectively; F: de-ionized water; (B) The correlation between the Fe3O4 concentration and 1/T2.
