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.
Development of pitcher fluid pH after pitcher opening. Under natural conditions and in prey-deprived pitchers the pH decreased rapidly during the first hour after opening. In contrast, the pH of the isolated pitcher fluid exposed to the air in open plastic vials stayed approximately constant.
