The presence of membrane specializations indicative of somato-dendritic synaptic junctions in the optic tectum of the frog.
D000818:Animals; D001001:Anura; D001369:Axons; D002462:Cell Membrane; D003712:Dendrites; D008854:Microscopy, Electron; D009474:Neurons; D009899:Optic Lobe, Nonmammalian / Q000166:cytology; D013569:Synapses / Q000166:cytology*; D003336:Tectum Mesencephali / Q000166:cytology*