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