1. Division 16, Mycotic and Parasitic Agents and Mycobacteria, Robert Koch Institute, Berlin, Germany
2. Institute for Animal Hygiene and Environmental Health, Centre for Infectious Medicine, Berlin, Germany
3. Division ZBS 4, Advanced Light and Electron Microscopy, Robert Koch Institute, Berlin, Germany
4. Institute of Microbiology and Epizootics, Berlin, Germany
5. Institute of Chemistry and Biochemistry, Free University Berlin, Berlin, Germany