Figure 1. Sample localities indicated in provinces of China.
Samples of ribbed-shelled snails are indicated as •, smooth-shelled with varix as ⊗, and smooth-shelled as ◯.
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.