A number of 45 female rabbits were anesthetized, and intra-abdominal lesions were set at either of the uterine horns and the abdominal wall in a standardized technique. Before closure of the abdomen the collective--divided into three subgroups of 15 animals each--received i.p. one of the following pharmaca: Group I: solution of physiologic saline (control group) Group II: poly-1-vinyl-2-pyrollidon iodine complex Group III: streptokinase/streptodornase. Two weeks after the first operation a second laparotomy was performed, and the sites were inspected. The adhesions were examined and their quantity and quality documented. Statistical evaluation showed that groups I and II were significantly different from group III as to the extent and intensity of the adhesions.