There are two main types of stem cells:
* Embryonic stem cells: These are found in early embryos and have the potential to develop into any type of cell in the body.
* Adult stem cells: These are found in various tissues throughout the body and can only develop into a limited number of cell types. They are responsible for repairing and maintaining tissues throughout life.
Examples of adult stem cells include:
* Hematopoietic stem cells in bone marrow, which produce blood cells.
* Neural stem cells in the brain, which can develop into neurons and glial cells.
* Muscle stem cells in skeletal muscle, which help repair muscle injuries.
It's important to note that while stem cells have the ability to divide, their rate of division varies depending on the type of cell and its role in the body.