Regeneration: Organizing the Blastema in Planarians

The processes that trigger regeneration after injury and link new and old tissue are not fully understood. New findings indicate that, after decapitation, planarians build an organizing center from stem cells at the old midline that directs head patterning and outgrowth. The processes that trigger regeneration after injury and link new and old tissue are not fully understood. New findings indicate that, after decapitation, planarians build an organizing center from stem cells at the old midline that directs head patterning and outgrowth.