International Review of Cytology presents current advances and comprehensive reviews in cell biology--both plant and animal. Articles in this volume address topics such as transcription factors in cardiogenesis, neuroactive steroid mechanisms, tetraspan vesicle proteins, the cytoskeleton in the cell cycle of higher plant cells, sexual dimorphism in the central nervous system of marsupials, and the effect of TNF receptors and Fas on signaling, gene activation, and cell death. Authored by some of the foremost scientists in the field, each volume provides up-to-date information and directions for future research.