International Review of Cytology presents current advances and comprehensive reviews in cell biology – both plant and animal. Authored by some of the foremost scientists in the field, each volume provides up-to-date information and directions for future research. Articles in this volume address cell biology of membrane trafficking in human disease; the biology of the gaucher cell; intracellular signals and events activated by cytokines of the TNF superfamily; cellular and molecular biology of orphan G-protein coupled receptors; organization and function of the actin; cytoskeleton in developing root cells.