Figure 1. Schematic map of sampling sites in Alexandria city, West Delta, Egypt, including four districts: El-Amraya, West, Central, and East districts.
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.