The document discusses potential applications of stem cell therapies, including using induced pluripotent stem cells (iPSCs) to treat Parkinson's disease and blood disorders, and using human embryonic stem cells (hESCs) to treat spinal cord injury. It provides details on a phase 1 clinical trial by Geron using oligodendrocyte progenitor cells derived from hESCs to treat spinal cord injury. The document also discusses how hematopoietic stem cell transplants are used to treat various cancers and autoimmune diseases. It describes techniques such as fluorescence activated cell sorting that are used to isolate hematopoietic stem cells.