L.L.M. van Deenen, Introduction.<br>Lipid Metabolism and Dynamics:<br>B. Roelofsen and J.A.F. Op den Kamp, Plasma Membrane Phospholipid Asymmetry and Its Maintenance: The Human Erythrocyte as a Model.<br>A.J. Schroit, Protein-Mediated Phospholipid Movement in Red Blood Cells.<br>K. Sandhoff and G. van Echten, Metabolism of Gangliosides: Topology, Pathobiochemistry, and Sphingolipid Activator Proteins.<br>A.H. Futerman, Ceramide Metabolism Compartmentalized in the Endoplasmic Reticulum and Golgi Apparatus.<br>G.M. Lee and K. Jacobson, Lateral Mobility of Lipids in Membranes.<br>H. Hauser and G. Lipka, Lipid Dynamics in Brush Border Membrane.<br>P.L. Yeagle, Lipids and Lipid-Intermediate Structures in the Fusion of Biological Membranes.<br>Lipid-Protein Interactions:<br> B.C. Ossendorp, G.T. Snoek, and K.W.A. Wirtz, Intracellular Phospholipid Transfer Proteins.<br>T. Borchers and F. Spener, Fatty Acid Binding Proteins.<br>C. Zurzolo and E. Rodriguez-Boulan, Lipid-Tagged Proteins.<br>A. Bienvenue and J.S. Marie, Modulation of Protein Function by Lipids.<br>Lipids as Modulators of Cell Functioning:<br> C.C. Sweeley, Lipids and the Modulation of Cell Function.<br>A.H. Merrill, Jr., Sphingosine and Other Long-Chain Bases That Alter Cell Behavior.<br>E.G. Bremer, Glycosphingolipids as Effectors of Growth and Differentiation.<br>W.J. van Blitterswijk, D. Schaap, and R.L. van der Bend, Generation and Attenuation of Lipid Second Messengers in Intracellular Signaling.<br>W.H. Moolenaar, K. Jalink, T. Eichholtz, P.L. Hordijk, R. van der Bend, W.J. van Blitterswijk, and E. van Corven, Lysophosphatidic Acid as a Novel Lipid Mediator.<br>Intracellular Transport and Traffic of Lipids:<br>J.C. McIntyre and R.G. Sleight, Mechanisms of Intracellular Membrane Lipid Transport.<br>J.P. Slotte, M.I. Porn, and A.-S. Harmala, Flow and Distribution of Cholesterol-Effects of Phospholipids.<br>J.W. Kok and D. Hoekstra, Glycosphingolipid Trafficking in the Endocytic Pathway.<br>W. van't Hof and G. van Meer, Lipid Polarity and Sorting in Epithelial Cells.<br>B.W. Wattenberg, Reconstitution of Glycolipid Transport between Compartments of the Golgi in a Cell-Free System.<br>A. Rigotti, M.P. Marzolo, and F. Nervi, Lipid Transport from the Hepatocyte into the Bile. <br>Summary and Perspectives:<br> K. Simons, Quo Vadis, Lipidologist.<br>Subject Index.