An official website of the United States government
Here's how you know
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.
The optical densities of 1/32 dilutions of two intestinal tissue homogenates and 1/50 dilutions of two serum samples with parasitic female (open bars) and iL3 antigen (black bars) both at a concentration of 5μg/ml. Error bars are ± 1 S.E.