Applications: – Applications of Microbial Cell Sensors, by Mifumi Shimomura-Shimizu and Isao Karube – Whole-Cell Bioreporters for the Detection of Bioavailable Metals, by Anu Hynninen and Marko Virta – Bacteriophage-Based Pathogen Detection, by Steven Ripp – Cell-Based Genotoxicity Testing, by Georg Reifferscheid and Sebastian Buchinger – Cytotoxicity and Genotoxicity Reporter Systems Based on the Use of Mammalian Cells, by Christa Baumstark-Khan, Christine E. Hellweg, and Günther Reitz – Live Cell Optical Sensing for High Throughput Applications, by Ye Fang – Cyanobacterial Bioreporters as Sensors of Nutrient Availability, by George S. Bullerjahn, Ramakrishna Boyanapalli, Mark J. Rozmarynowycz, and R. Michael L. McKay – Application of Microbial Bioreporters in Environmental Microbiology and Bioremediation, by E. E. Diplock , H. A. Alhadrami , and G. I. Paton