Abstract
1Department of Applied Chemistry and Microbiology, PO Box 56 (Biocentre), 00014 University of Helsinki, Finland
2Department of Microbiology, 508 Life Sciences Building, Louisiana State University, Baton Rouge, LA 70803, USA
3DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen, D-38124 Braunschweig, Germany
4Institut fuer Angewandte Mikrobiologie, Justus-Liebig Universität, Senckenbergstr. 3, D-35390 Giessen, Germany
5National Public Health Institute, Department in Turku, Kiinamyllynkatu 13, FIN-20520 Turku, Finland