Fig. 1.
Effects of the lactation stage (months) on Cd, Pb, Cu and Zn levels in breast milk, per 1 L. a,b,c,d p < 0.05
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.