Diffusion of urea through membranes

Ulrike Gunther, Marcus Hartmann, Siegfried Wartewig, Reinhard Neubert Martin-Luther-Universitat Halle-Wittenberg, 1 Institute of Pharmaceutics and Biopharmaceutics, 2 Institute of Applied Dermatopharmacy, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany, E-Mail: neubert@pharmazie.uni-halle.de