An official website of the United States government
Here's how you know
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.
EFTEM analysis of yttrium as a constituent of the CNT pellet catalyst in an epithelial cell. (a) Overview of one A549 epithelial cell in the triple cell co-cultures with intracellular CNT pellet. (b) EFTEM detection of yttrium (red points).