Cell regeneration is the process by which cells repair or replace themselves after damage or loss. This natural mechanism is essential for maintaining healthy tissues and organs in the body. For example, when skin is cut, skin cells rapidly divide to heal the wound, ensuring the integrity of the skin barrier. Different types of cells have varying abilities to regenerate. Stem cells are particularly important because they can develop into many different cell types, aiding in the repair of tissues like muscle and nerve. Understanding cell regeneration is crucial for advancements in medical treatments and therapies for injuries and diseases.