after injection of ( 3h ) -glycine into the pigeon optic tectum fast labeling of intrinsic elements in a restricted part of the subtectal n. isthmi , pars parvocellularis ( ipc ) , is found - strongly suggesting a rapid retrograde migration of radioactivity in neurons of the glycinergic ipc-tectal pathway .
C0228405
optic tectum
C0039433
tectal