Daniel L. Costa,   BSc in Biology/Chemistry
                             MSc in Environmental Sciences
                             MSc/ScD in Physiology
                             D.A.B.T.                                      
                             U. S.  Environmental Protection Agency, U.S.A.

Robert B. Devlin, PhD in Molecular Biology
                             U. S.  Environmental Protection Agency, U.S.A.

Ken Donaldson,   PhD in Immunology
                             DSc in Particle Toxicology
                             Professor of Respiratory Toxicology                                      
                             University of Edinburgh, United Kingdom

Heidi Foth,           PhD in Dentistry
                             Professor of Environmental Toxicology
                             Head of the German Society of Toxicology
                             Martin-Luther-University Halle-Wittenberg, Halle/Saale, Germany

Rogério S. Gaspar, PhD in Pharmaceutical Sciences
                             Professor of Pharmaceutics
                             Faculty of Pharmacy, University of Lisbon, Portugal

Uwe Heinrich,     PhD in Biology
                             F.A.T.S.
                             Professor of Toxicology and Aerosol Research
                             Executive Director and Division Head of Toxicology and
                             Environmental Hygiene at the Fraunhofer ITEM

Hillel S. Koren,    PhD in Immunology
                             U. S.  Environmental Protection Agency, U.S.A.

Harald F. Krug,    State examination in Biology/Chemistry
                             PhD in Cell Physiology
                             Professor of Environmental Toxicology at the University of Karlsruhe
                             Lecturer at the ETH Zurich
                             Head of Laboratory for Materials-Biology Interactions
                             Empa - Materials Science & Technology, St. Gallen, Switzerland 

Claus Michael Lehr, PhD in Pharmaceutics
                             Professor of Biopharmaceutics and Pharmaceutical Technology
                             Saarland University, Saarbruecken, Germany

Andre E. Nel,        Bachelor of Medicine and Surgery, MB, ChB
                             Doctorate in Medicine
                             Chief of the Division of NanoMedicine
                             UCLA School of Medicine, Los Angeles, U.S.A.

Günter Oberdörster, PhD in Pharmacology
                             DVM (Veterinary Medicine)
                             Professor of Toxicology
                             The University of Rochester, Department of Environmental
                             Medicine, Rochester, NY, U.S.A.

Jürgen Pauluhn, University degree in Chemistry
                             PhD in Physicochemistry
                             D.A.B.T.
                             Eurotox registered toxicologist
                             Professor of Toxicology at the Hanover Medical School
                             Bayer HealthCare AG, Head of General Toxicology/Section
                             Inhalation Toxicology, Wuppertal, Germany

Volkmar Richter, PhD in Physics
                             Fraunhofer Institute for Ceramic Technologies and Systems IKTS, Dresden, Germany

Holger Schulz,    State examination in Medicine
                            MD (Medical Doctor)
                            Professor of Physiology
                            Lecturer at the Ludwig Maximilians University, Munich, Germany
                            Head of the Institute of Inhalation Biology (Acting) at
                            GSF - National Research Center for Environment and Health