Regeneration by Planarians

Regeneration in planarians is their remarkable ability to recover lost body parts through cellular growth and differentiation. When a planarian is cut, specialized stem cells called neoblasts rapidly multiply and migrate to the wound site, transforming into the various cell types needed for healing and new tissue formation. This process allows them to fully regrow missing regions, such as the head or tail, often resulting in a complete and functional organism. Their regenerative capacity is a result of highly active stem cells and precise genetic regulation, making them a key model in studying tissue regeneration and stem cell biology.