This book provides a comprehensive review of the chemistry and research illustrating the benefits of polyurethane for immobilizing cells, with dozens of case studies in medical devices and environmental engineering. • Offers an essential resource for medical and environmental scientists • Provides a multidisciplinary and lucid writing style that uses little or no jargon • Extrapolates current technology into advanced areas, especially environmental remediation and medical devices • Fills the gap between immobilization research and practical applications.