👉 Regeneration, in biology and medicine, refers to the process by which an organism's cells repair themselves or regenerate tissues after damage. This occurs through a series of biological processes that involve changes in cell structure and function. In simpler terms, it means that when something has been damaged or diseased, the body will start to rebuild itself, replacing lost parts with new ones. This can be seen as an ongoing process where cells are being replaced by new ones. Regeneration is often a natural part