tokens: Relaxant effect of prostaglandin E1 ( PGE1 ) and papaverine ( PAP ) were measured in strips of corpus cavernosum smooth muscle taken from a healthy control group of men ( A ; n = 5 ) , from arteriogenically impotent men ( B ; n = 6 ) and from additionally diabetic impotent men ( C ; n = 5 ) with venous leakage .