Induced pluripotent stem (iPS) cell technology has paved new ways for disease modelling and drug discovery. Disease modelling with the differentiated neuronal cells from patient-specific iPS cells partially recapitulated the phenotypes of spinal muscular atrophy, familial dysautonomia and Rett syndrome. In this book, the authors present current research in the study of induced stem cells, including the cryopreservation of pluipotent stem cells; tissue engineering approaches using bioactive ceramics towards bone regeneration; induced pluripotent stem cell-derived hepatocytes as an alternative to human adult hepatocytes; iPS technology for studying neurodegenerative diseases and iPS from cord blood cells.