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.
Schematic drawing of a chemo‐orientation test chamber used to measure snail attractiveness to cercariae. The chamber consists of a closable central compartment connected to two outer compartments through side arms. During the assay, the central compartment, one outer compartment, and the connecting side arm were filled with clean water (white) and the other outer compartment and its adjacent side arm with snail‐conditioned water (light gray)
