Stem cells are cells found in all multi cellular organisms. They are characterised by the ability to renew themselves through mitotic cell division and differentiate into a diverse range of specialised cell types. This book presents and discusses current research in the study of stem cell research, including cancer and prostate stem cells; neural stem cells and taurine; interactions between transplanted neural stem cells and host tissue; retrovirus vector silencing in stem cells and moral and scientific consideration in embryonic stem cell research.