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.
Comparison of precursor frequencies of CD4+ T cells producing IFN-γ (▪) or Il-4 (░⃞) or providing help for B cells (□) from WT (A) and μMT (B) mice obtained 40 days after infection with P. chabaudi. The histograms represent the mean precursor frequencies derived from the frequencies calculated from five, six, and four separate experiments for IFN-γ, Ab Help, and IL-4, respectively. The standard errors of the means are shown.
