FIG. 1.
Topical histamine rapidly induced conjunctivitis (<1 min) that was either mild [(A); 1.0 mg/mL solution] or severe [(B); 375 mg/mL solution]. Color images are available online.
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.