Figure 2.
TEM micrographs ((A–C), scale bar 50 nm) and the corresponding size distribution statistical analysis (D–F) of MSN_H7 (A,D), MSN_H8 (B,E) and MSN_H9 (D,F).
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.