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The marine worms that can sprout new heads — including brains

Lineus sanguineus at different stages of regeneration, from fragment to complete worm

A ribbon worm (Lineus sanguineus) is shown 4 days after its head was cut off (top left). By 15 days after decapitation (bottom right), its head has regrown. Credit: Eduardo E. Zattara

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Nature 567, 149 (2019)




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