What characterizes stem cells?

Stem cells are characterized by their unique potential to develop into various cell types. Unlike fully differentiated cells, which have specific functions and structures tailored to perform particular roles in the body, stem cells remain in an undifferentiated state, giving them the ability to transform into specialized cells when needed. This capacity for differentiation is crucial for growth, development, and tissue repair.

Stem cells can develop into many different types of cells, including muscle cells, nerve cells, and blood cells, depending on the signals they receive from their environment. This versatility is what distinguishes them from other cell types that are already committed to a specific function.

In contrast to stem cells, fully differentiated cells cannot revert back to a stem cell state or change into another type of cell. Therefore, the ability to develop into various cell types is the defining characteristic of stem cells.