Biotechnology is the use of living organisms to enhance products, our lives and our environment. It is a broad and complex discipline that encompasses many specialised areas. The promise that biotechnology holds for developing countries is well recognised and it is an important tool that can be applied to diverse economic sectors with a focus on the production of food crops, livestock management, human health care, the chemical industry and environmental management. This book covers applications of biotechnology in selected areas such as health care, agriculture, microbial systems, "in silico" analysis for drug designing and drug discovery and the environment.