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.
The estimated EC50 isobole of Cu and Zn in comparison to two red dots showing synergistic toxic effects. The straight line of isobole is constructed using the EC50 values of Zn and Cu estimated from the results of single heavy metal experiments. Equation (4) was used to obtain two red dots from the results of a combination of two HM experiments.
