Where do stem cells go after no longer needed?

After stem cells are no longer needed, they can undergo apoptosis, a programmed cell death process that ensures they do not persist in the body when their function is complete. Some stem cells may also differentiate into specialized cells and become part of various tissues, while others may remain in a quiescent state, ready to be activated if needed in the future. Additionally, in certain conditions, excess stem cells may be cleared by the immune system.