Abstract
The Symposium of the “9éme Reunion Annuelle de la SocietC FranCaise de Biophysique” was organized at Aussois (France) 11–13 October 1990, by the Vice-President of this Society, Guy HervC (CNRS, Gif sur Yvette). The general topic was “Enzymology in extreme conditions” and there were about 70 participants during two and a half days.