Front Cover; International Review of Catology: A Survey of Cell Biology; Copyright Page; Contents; Contributors; Chapter 1. Na+ Requirements for Capacitation and Acrosomal Exocytosis in Mammalian Sperm; I. Introduction; II. Capacitation; III. Acrosomal Exocytosis; IV. Ionic Regulation of Sperm Function; V. Na+ Requirements for Capacitation; VI. Na+ Requirements for Acrosomal Exocytosis; VII. Sequence of Ionic Changes Leading to Acrosomal Exocytosis; VIII. Conclusions; Reference; Chapter 2. Control of Plant Enzyme Activity by Reversible Protein Phosphorylation; I. Introduction

II. Enzymes of Cell OrganellesIII. Cytosolic Enzymes; IV. Other Enzymes; V. Summary and Future Perspectives; References; Chapter 3. Testicular Macrophages; I. Introduction; II. Ontogeny and Phylogeny; III. Cellular Structure; IV. Paracrinology; V. Endocrinology; VI. Immunological Aspects; VII. Clinical Implications; VIII. Isolation and Culture of Testicular Macrophages; IX. Conclusions and Future Directions; References; Chapter 4. Analysis of Microfilament Organization and Contractile Activities in Physarum; I. Introduction

II. Physarum as a Model System for Microfilament Analysis and Cell Motility ResearchIII. Biochemical Composition of the Microfilament System; IV. Organization of the Microfilament System; V. Contractile Activities of the Microfilament System; VI. Regulation of Contractile Activities; VII. Concluding Remarks; References; Chapter 5. Molecular and Cellular Aspects of Neurotransmission and Neuromodulation; I. Introduction; II. Neuronal Interconnection: Synapses; III. Chemical Neuromediators; IV. Ion Channels and Action Potentials; V. Signal Transduction Systems and Chemical Neuromediators

VI. Endogenous Anxiolytic MoleculesVII. Immunoregulators and Neurotransmission; VIII. Neuronal-Glial Interaction; IX. Blood-Brain Barrier; X. Concluding Remarks; References; Index