overlaps T neuron FBbt:00003726 VFB:FBbt_00003726 T fly_anatomy.ontology Intrinsic columnar neuron of the optic lobe that has its cell body in the posterior part of the optic lobe and a cell body fiber that bifurcates in the second optic chiasma (Fischbach and Dittrich, 1989). It has two branches, each targeting a different neuropil adjacent to the second optic chiasma (lobula, lobula plate and medulla) (Fischbach and Dittrich, 1989). second optic chiasma optic lobe intrinsic columnar neuron