Molecular Aspects: Gene Activity and Regulation (G. Schreiber and A.R. Aldred). Proteins and Plasma Protein Metabolism (T. Peters, Jr.). Carbohydrates and Glycogen Metabolism (R.R. Cardell and E.L.S. Cardell). Subcellular Components: The Plasma Membrane and Intercellular Junctions (W. Hong). Receptors and Endocytosis (C.A. Casey and D.J. Tuma). Cytoskeleton (S.W. French, M. Cadrin, H. Kawahara, and K. Kachi). Peroxisomes and Lysosomes (U. Soto, S. Rapp, K. Gorgas,and W.W. Just). Parenchymal Cells: Fetal and Postnatal Growth (J. Vassy and M. Kraemer). Regeneration (A. Francavilla, T.E. Starzl, D.H. Van Thiel, M. Barone, and L. Polimeno). Functional Compartmentation of Hepotocytes (C.M. Berkowitz, E. Guibert, B. Bilir, and J.J. Gumucio). Extracellular Matrix (M. Dziadek and T. Thomas). Nonparenchymal Cells: Endothelial Cells and Kupffer Cells (R.S. McCuskey). Fat-Storing Cells (H.F.J. Hendricks, A. Brouwer,and D.L. Knook). Pit Cells (L. Bouwens). Bile Duct Cells (P. Van Eyken and V.J. Desmet).