Torsten Teorelll905 - 1992 Proceedings from a Symposium to commemorate The Life and Scientific Achievements of TORSTEN TEORELL On the 4th of August 1992 professor Torsten Teorell died a t the age of 87 after a very active scientific career leading to significant contributions to physiology. On the 11th of December 1992 the Department of Physiology at Uppsala University arranged a small symposium t o commemorate some of Torsten Teorell's extensive scientific work and during this symposium six papers were presented. It has been suggested that these papers may be of general interest and they are therefore now being published. 3