Neuroscience. 1999 Jan;88(2):655-64 doi:10.1016/S0306-4522(98)00252-8

Gobron S, Creveaux I, Meiniel R, Didier R, Dastugue B, Meiniel A.

SCO-spondin is evolutionarily conserved in the central nervous system of the chordate phylum.

A Southern blot suggests the presence of a gene encoding a SCO-spondin in Oikopleura.