Jawless Fish Can Regrow their Spinal Cords ― Twice | Nature Research Highlights

Eleven weeks after being cut, a lamprey’s spinal cord shows regrowth of some of its nerve fibres (green) and the tube-like central canal (blue). Credit: S. Allen and J. Morgan
Eleven weeks after being cut, a lamprey’s spinal cord shows regrowth of some of its nerve fibres (green) and the tube-like central canal (blue). Credit: S. Allen and J. Morgan
By Diana Kenney February 08, 2019
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A jawless fish called the lamprey is known for its resilience: after its spinal cord is severed, it can regrow part of its central nervous system and resume swimming normally. Now, [MBL] scientists have discovered that the sea lamprey (Petromyzon marinus) can repeat the feat even if the same site is re-injured. 

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