Isolation and characterization biologically active polypeptides from the sea anemone Anemonia sulcata—25 years' work on marine toxins: L. Béress,1E. Wachter,2R. Béress,1J. Zwick,1A. Leimenstoll,1H. Fritz3 and O. Wassermann1 (1Institute of Toxicology, Christian-Albrechts-University, Brunswikerstr. 10, D-2300 Kiel 1, F.R.G.; 2Institute of Physiological Chemistry, Goethestr. 33, D-8000 München, F.R.G.; and 3Institute of Clinical Chemistry, Nuβbaumstr. 20, D-8000 München, F.R.G.)