spinal cord

spinal cord

From worm muscle to spinal discs

4d ago
SOURCE  

Description

This muscle, found in a marine worm, implies that the evolutionary origin of our spinal discs is much older than was assumed. It has the same genetic signature and develops in the same place as the notochord – the structure that's replaced by our backbone during development, and which is a defining feature of the group of animals to which humans belong. Get the whole story at http://www.embl.org/press/2014/140911_Heidelberg