ABSTRACT
Stem cells have increasingly been the subject of considerable excitement. The swift pace with which new data are being generated is astonishing and has signi‹cant implications for modern medicine. The term stem cell biology has largely been equated with embryonic stem cell biology; today, however, the term stem cell biology also applies to adult stem cells, tissue-speci‹c stem cells, cancer stem cells, and induced pluripotent stem cells (iPSCs). With the exponential growth of our understanding of stem cells, it is an exciting time to realize the clinical potential of stem cell biology that was not conceivable a mere decade ago.
