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.
Heavy metal concentrations in the edible parts of vegetables. The error bars indicate the standard deviation, and the asterisks indicate significant differences in heavy metal concentrations between vegetable grown in mine-affected and reference soils. *P < 0.1, **P < 0.05, and ***P < 0.001.
