Histology of the placentas from pregnant rats treated with AG and sStx2.

<p>Placentas from pregnant rats treated with 0.7 or 2 ng Stx2/g body wt presented necrotic areas (A and B, black arrows) as compared with controls (C). Placentas from rats treated with 100 µg AG/g body wt plus 0.7 (D) or 2 ng (E) Stx2/g body wt did not show histological changes compared with controls (C). H&E. Original magnification: ×200.