“…It also might be that smaller molecular impurities crossed the urothelium. And urothelium cell swelling in conjunction with edema of the lamina propria after exposure to hypotonic fluids as a possible cause for the inulin leak has not been verified [28], Employing l3lI-chloryliodine-propylinulin, Strohmenger and Sack [26] found the canine bladder to be absolutely impermeable to this historical volume marker. Interestingly, inulin was reported to leak across the embryologically associa ble 'tight' epithelium lining the epididymal duct at a rate of 10%/h [29], In comparison to that, 19, 14 and 14%/h at the respective filling volumes of 0.3, 0.6 and 0.9 ml were calculated in this study.…”