Stem cell therapy has tremendous scope of treating a range of diseases. The most commonly used stem cell therapy is the transplantation of the bone marrow. It is used in treating patients with diseases like leukemia and lymphoma. Recent research focuses on studying stem cells in order to use them to treat diseases. The objective of this book is to give a general view of the different areas of stem cells research and its applications. Scientists and students actively engaged in this field will find this book full of crucial and unexplored concepts.