Figure 2.
Chemical structures of contrast agents. (a) MnAMP is a 1 : 1 mixture of MnTriAMP and MnTetraAMP; (b) MnPNH2; (c) MnEtP.
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.