1. Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.
2. Laboratoire “Lésions des Acides Nucléiques,” SCIB-UMR-E n°3 (CEA/UJF) Institut Nanosciences et Cryogénie CEA/Grenoble, Grenoble, France.
3. Bay Area Environmental Research Institute, NASA Ames Research Center, Moffett Field, California, USA.
4. Department of Microbiology and Cell Science, University of Florida, Space Life Sciences Laboratory, Kennedy Space Center, Florida, USA.
5. Institut für Flugmedizin, Technical University RWTH, Aachen, Germany.
6. Jet Propulsion Laboratory, Pasadena, California, USA.
7. German Collection of Microorganisms and Cell Cultures GmbH (DSMZ), Braunschweig, Germany.