Contents. List of Contributors. Introduction to the Series (A.M. Tartakoff). Preface (H. Plattner). Part A. Involvement of the Trans-Golgi Network, Coated Vesicles, Vesicle Fusion, and Secretory Product Condensation in the Biogenesis of Pseudomicrothorax Trichocysts (R.K. Peck, B. Swiderski, and A. Tourmel). Early Steps of the Secretory Pathway in Paramecium: Ultrastructural, Immunocytochemical, and Genetic Analysis of Trichocyst Biogenesis (N. Garreau de Loubresse). Calcium and Trichocyst Exocytosis in Paramecium: Genetic and Physiological Studies (J. Cohen, and D. Kerboeuf). Exocytic Events during Cell Invasion by Apicomplexa (J.F. Dubremetz and R. Entzeroth). Pathways of Lysosomal Enzyme Secretion in Tetrahymena (A. Tiedtke, T. Kiy, C. Vosskuhler, and L. Rasmussen). Synchronization of different Steps of the Secretory Cycle in Paramecium Tetraurelia: Trichocyst Exocytosis, Exocytosis-coupled Endocytosis, and Intracellular Transport (H. Plattner, G. Knoll, and R. Pape). The Ciliary Membrane and its Engagement in Conjugation (J. Wolfe). Ciliary and Plasma Membrane Proteins in Paramecium: Description, Localization, and Intracellular Transit (Y. Capdeville, R. Charret, C. Antony, J. Delorme, P. Nahon, and A. Adoutte). Part B. Endocytosis and Intracellular Transport of Variant Surface Glycoproteins in Trypanosomes (M. Duzenko and A. Seyfang). A Comparative Survey on Phagosome Formation in Protozoa (K. Hausmann and R. Radek). Enosomal Membrane Traffic of Ciliates (R. D. Allen and A.K. Fok). Membrane Flow in the Digestive Cycle of Paramecium (A.K. Fok and R.D. Allen). Signal Coupling during Endocytosis in Amoeba Proteus (R.D. Prusch). Membrane Recycling and Turnover in Large, Free-Living Amoebae (K.W. Jeon). Food Uptake and Digestion in Amoebae (W. Stockem and M. Christofidou-Solomidou). The Lysosomal System in Malaria Parasites (C. Slomianny). Membrane and Microtubule Dynamics in Heliozoa (T. Suzaki and Y. Shigenaka). The Host-Symiont Interface in Ciliate-Algae Associations: Inhibition of Membrane Fusion (W. Reisser). Lipid Composition of Membranes Involved in Membrane Traffic in Tetrahymena (S. Umeki and Y. Nozawa). Index.