Spermine does not compete with omega-conotoxin GVIA in the striatum radiatum of the hippocampal slice.
Eterovic VA, Torres E, Ferchmin PA. Spermine does not compete with omega-conotoxin GVIA in the striatum radiatum of the hippocampal slice. Brain Res. 1997 Oct 24; 772(1-2):191-202.