The amazing capacity to heal from spinal cord damage, a jawless fish known as the lamprey has drawn the attention of scientists for nearly 50 years. Despite just partial brain regeneration, a recent study suggests a potential method lampreys might use to swim once more after spinal injury.
Researchers at Uppsala University have discovered and characterised a DNA sequence found in jawed vertebrates, such as sharks and humans, but absent in jawless vertebrates, such as lampreys. This DNA is important for the shaping of the joint surfaces during embryo development.