Regeneration (biology)

Regeneration in biology is the remarkable ability of living organisms to regrow or repair damaged, lost, or worn-out body parts, ranging from simple structures like skin to complex organs. Some animals, like starfish and salamanders, can regenerate entire limbs, while humans can regrow skin, hair, and the outer layer of our liver. Scientists study regeneration to understand how cells communicate and coordinate to rebuild body parts, hoping to one day develop new therapies that could help people recover from injuries or diseases.