Classic regeneration experiments on planarian flatworms (Dugesia/Schmidtea species) demonstrated that a fragment as small as about 1/279th of the original animal's body can regrow into a complete, fully functional worm — among the most extreme whole-body regenerative capacities documented in any animal, driven by a population of pluripotent adult stem cells called neoblasts.
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Classic regeneration experiments on planarian flatworms (Dugesia/Schmidtea species) demonstrated that a fragment as small as about 1/279th of the original animal's body can regrow into a complete, fully functional worm — among the most extreme whole-body regenerative capacities documented in any animal, driven by a population of pluripotent adult stem cells called neoblasts.
The smallest documented fraction of an adult planarian flatworm's body, when surgically excised, shown in laboratory experiments to regenerate into a fully formed, functional new organism.
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1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-SMALLEST-FRAGMENT-REGENERATING-FLATWORM
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Limits Registry. LR-SMALLEST-FRAGMENT-REGENERATING-FLATWORM. Smallest body fragment shown to regenerate into a complete organism. 2026.