This book provides insight into established practices and research into apoptosis and senescence. The volume thoroughly examines novel and emerging techniques and research in the fields of cell death pathways, senescence growth arrest, drugs and resistance, DNA damage response, and other topics that still hold mysteries for researchers. In total, this volume provides basic scientists and clinicians with a deeper and more complete understanding of the cellular responses of malignancies which may determine the effectiveness of treatment, both in the initial stages of the disease as well as in disease recurrence.