Regeneration (biological)

Biological regeneration is the process by which organisms repair, restore, or replace damaged or lost tissues, organs, or entire body parts. It involves cellular activities like growth, division, and differentiation to rebuild structures, ensuring the organism's survival and health. Some organisms, like starfish and certain amphibians, can regenerate entire limbs, while others, such as humans, primarily regenerate tissues like skin, liver, or blood. Regeneration is a natural response to injury that varies widely among species, playing a crucial role in healing and maintaining biological integrity.