Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 1627, FI-70211 Kuopio, Finland;
VTT Ltd, PO Box 1300, FI-33100 Tampere, Finland;
Microbiology Unit, Belgian Nuclear Research Centre, B-2400 Mol, Belgium;
Institut de Medecine et de Physiologie Spatiales, BP 74404, F-31405 Toulouse Cedex, France;
Institute of Bio-Medical Problems, 76-A, Khorosheu Skoye shosse, RU-123007 Moscow, Russia;
Institute of Biophysics SB RAS, Akademgorodok, Krasnoyarsk RU-660036, Russia;