Final answer:
Adult stem cells have limited differentiation potential compared to embryonic stem cells, but induced pluripotent stem cells (iPSCs) offer a promising alternative.
Step-by-step explanation:
Unfortunately, there are not as many options with adult stem cells versus embryonic stem cells because they have already differentiated. Adult stem cells are multipotent, which means they are limited in their differentiation potential to the types of cells found in their tissue of origin, such as bone marrow and skin. In contrast, embryonic stem cells are pluripotent and can differentiate into nearly any cell type, but they face immunological, ethical, and legal challenges. However, with advancements in cell-based therapy, researchers have developed induced pluripotent stem cells (iPSCs), which can be reprogrammed from adult cells to function similarly to embryonic stem cells, offering a promising alternative without the associated pitfalls.