Efficacy of praziquantel against Giardia lamblia in rats: parasitological, pathological and therapeutic study.

Rats were divided into two experimental groups received single or split doses of PZQ, and two control groups one infected untreated and the other normal healthy rats. The effect of infection on rat growth, on jejunal and duodenal architecture were studied histopathologically after H&E staining. The jejunal ultrastructure was examined by SEM and TEM.