Morphological changes in <i>S. mansoni</i> adult worms following praziquantel or edelfosine treatments.

<p>H&E stained sections of freshly recovered male parasites that were untreated (Control) or treated with 10 µM praziquantel (PZQ) or 20 µM edelfosine (EDLF) for 2 days. Tubercle collapse (arrow), damages of the tegument surface, vacuolization of the subtegumental cells (asterisk) and destruction of muscle layers (arrowhead) were observed after treatment with PZQ or EDLF.