FIG. 6.
Primary G. lamblia infections of IgA KO mice. IgA KO mice (○) and wild-type littermate B6129 control mice (•) were infected orally with 107 G. lamblia trophozoites. Infection severity was assessed at the indicated times after infection by determining total trophozoite numbers in the small intestine. All data are means ± SEM from six to eight mice for each data point. The detection limits of the assays are indicated by the gray line in each panel. Asterisks indicate values of IgA KO mice that are significantly different from controls at the same time point (P < 0.05 by rank sum test).