A.  Symbioses (Phenomenology and Phylogeny)

• 1. Epi- / Endocytobionts in Protists

Chair: J.H.P. Hackstein (Nijmegen, The Netherlands) / K.P. Chang (Chicago, U.S.A.)

• 2. Invertebrate / Vertebrate Endocytobiosis / Endosymbiosis

Chair: H. Breeuwer (Amsterdam, The Netherlands) / K. Sander (Freiburg, Germany)

• 3. Plant Microbe Interactions

Chair: G.M. Rothe (Mainz, Germany) / D. Werner (Marburg, Germany)

 B.  Pro- and Eukaryotic Cells (Endocytobiological / Endocytotechnical Aspects)

• 1. Intertaxonic Combination (Nuclear and Exogenosomal Origin and Evolution)

Chair: W. Löffelhardt (Wien, Austria) / B. Stöbe (Düsseldorf, Germany) / G. McFadden (Parkville, Australia) / K. Valentin (Gießen, Germany)

• 2. Signal Transduction between Nucleus and Exogenosomes

Chair: A. Trewawas (Edinburgh, United Kingdom) / R.G. Herrmann (München, Germany) / G. Neuhaus (Freiburg, Germany)

• 3. Proof for Exogenons (Gene Transfer)

Chair: M. Syvanen (Davis, U.S.A.) / W. Martin (Braunschweig, Germany)

• 4. Protein Import into Cell Organelles (Endo- and Exogenosomes)

Chair: J. Joyard (Grenoble, France) / N. Pfanner (Freiburg, Germany)

• 5. RNA Metabolism in Exogenosomes (Editing, Splicing, Processing)

Chair: M. Sugiura (Nagoya, Japan) / K. Wolf (Freiburg, Germany)

• 6. Biochemistry and Physiology of Exogenosomes

Chair: K. Apel (Zürich, Switzerland) / T. Börner (Berlin, Germany)

 C.  Biomedical Aspects of Cancer (Endocytobiological View)

• 1. Physical and Chemical Aspects in Cell Morphogenesis / Differentiation and Dedifferentiation

Chair: U. Randoll (Erlangen, Germany) / W. Schwemmler (Berlin, Germany)

• 2. Mitochondrial Pathology and Cancer

Chair: C. Richter (Zürich, Germany) / H. Sies (Düsseldorf, Germany)

 D.  Theoretical / Applied Aspects of Symbiosis / Endocytobiology / Medicine

• 1. Supramolecular Organisation of the Cytoplasm

Chair: J. Ovadi (Budapest, Hungary) / J. Bereiter-Hahn (Frankfurt a. M., Germany)

• 2. Molecular Bioinformatics and Evolution

U. Hobohm (Basel, Switzerland) / P. Wrede (Berlin, Germany) / W. Haehnel (Freiburg, Germany)

• 3. Cell Cycle and Cell Rhythms

Chair: W. Hastings (Harvard, U.S.A.) / E. Wagner (Freiburg, Germany)

• 4. Cellular Oscillators and Signal Transduction

Chair: G. Dupont (Bruxelles, Belgium) / F. Kaiser (Darmstadt, Germany)

• 5. Theoretical Aspects in Symbiogenesis and Biosemiotics

Chair: K. Kull (Tartu, Estonia) / T. Tiivel (Tallinn, Estonia)

• 6. Cell Biological Technology

Chair: B. Wolf (Freiburg, Germany)

   Plenary Discussion

• Do we really need a nomenclature specific for Symbiosis and Endocytobiology?

Chair: H.E.A. Schenk (Tübingen, Germany) / K.V. Kowallik (Düsseldorf, Germany