Final answer:
Adult stem cells represent an autologous treatment that is safer for cell-based therapies due to a reduced risk of immune rejection compared to embryonic stem cells, though they have a more limited differentiation range.
Step-by-step explanation:
Adult stem cells are ideal because they represent an autologous treatment, which means that these stem cells are derived from the same individual receiving the treatment. This reduces the risk of immunological rejection that is common with embryonic stem cells. Adult stem cells, such as those obtained from bone marrow or peripheral blood, have a limited range of differentiation but are not seen as foreign by the body, making them a safer choice for cell-based therapies. Storage of cord blood or deciduous teeth offers a source of these cells that may be used in the future. The development of induced pluripotent stem cells has also provided a promising alternative to embryonic stem cells, avoiding ethical, legal, and immunological issues associated with the latter.