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.
T-cell responses of 20 immunized adult volunteers in an LP assay. The antigens used for stimulation were OMVs from strain 385/83 at a concentration of 0 to 10 μg per ml. Results are expressed as mean and standard errors of the stimulation index of all cases in triplicate cultures. Dashed lines represent cutoff values.
