RNAi technology is used for large-scale screens that systematically shut down each gene in the cell, which can help identify the components necessary for a particular cellular process or an event such as cell division. Exploitation of the pathway is also a promising tool in biotechnology and medicine. Introducing new technology in the study of RNA interference in microorganisms, plants, and animals, this book reviews the selective and robust effect of RNAi on gene expression. This process is essential both in cell culture and in living organisms because synthetic dsRNA introduced into cells...