Stem cells are undifferentiated cells with the ability to develop into different cell types. They play a crucial role in development, growth, and tissue repair. There are two main types of stem cells: embryonic stem cells, which can differentiate into any cell type, and adult stem cells, which are limited to differentiating into cell types of their tissue of origin. The potential of stem cells in regenerative medicine and therapeutic applications is a significant area of research in cell biology.
