Preface. Section I. Cytoskeleton and Cell Cycle. Microtubule dynamics in vitro and their relationship with cellular function (D. Job). Structure and function of two molecular motors and their pathways (R.H. Wade). The cellular machinery for chromosome movement (J.R. McIntosh). The role of microtubules in the creation of order in the cell (R.L. Margolis). Section II. Intracellular Communication - Membranes - Synapses - Time. Intracellular membrane traffic (M. McCaffrye, B. Goud). Signaling in sensory cells. Molecular structure and function of ion channels (U.B. Kaupp). Theoretical models for oscillations in biochemical and cellular systems (A. Goldbeter). Section III. Development of the Central Nervous System. An overview of nervous system development (O. Pourquié, F. Bourrat). Section IV. Student Seminars . Inhibition as binding controller at the level of a single neuron (Information processing in a pyramidal-type neuron) (A.K. Vidybida). Isolated nerve cell response to laser irradiation and photodynamic (A.B. Uzdenski). Section V. Lectures and Seminars presented at the summerschool but not published in the proceedings. The endomembrane system (D. Sabatini). The history of the two-stage model for membrane protein folding (D.M. Engelman). Post synaptic receptors and the organisation of the synapse (R. Kelly). Short reports on Ph.D. student seminars. Conclusion. Relations between physics and biology (B. Jacrot).