Fig. 1.
Joint representation of eight the physicochemical characteristics of the NMs and the possible causal associations between these characters. The explanation of each characteristic is noted in the text.
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.