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.
Responses of A. americanum nymphs to pondberry extract (A), DEET (B) and acetone (concentration of zero) in vertical filter paper bioassays. Estimated EC50 and EC95 (B only) indicated by arrows and 95% confidence intervals by horizontal bars flush with the x-axis.
