Gene discovered that activates stem cells for organ regeneration in Planarians

Researchers announced the discovery of a gene zic-1 that enables stem cells to regrow a head after decapitation in flatworm planarians. Professor Christian Petersen and Ph.D. student Constanza Vásquez-Doorman of Northwestern University discovered zic-1 by investigating planarians, an animal that uses pluripotent stem cells to regrow any missing tissue lost from injury. The study, entitled "zic-1 Expression in Planarian Neoblasts after Injury Controls Anterior Pole Regeneration," was reported in PLOS Genetics.

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