Lung (HE staining, × 4). Portal triad obstruction-rats, 24 h reperfusion (control, left; BPC 157 right). While architecture was preserved, there was in portal triad obstruction-rats some edematous exudate in alveoli and progressing capillary congestion, mild to severe in alveolar septa, which counteraction was clearly seen at 24 h of reperfusion.