T3 [FBbt_00003730]

T3

ID: FBbt_00003730

T neuron with its soma posteriorly adjacent to the gap between the medulla and lobula plate and a cell body fiber that projects along the proximal surface of the medulla before branching in the second optic chiasm (Fischbach and Dittrich, 1989; Shinomiya et al., 2019). One branch forms a bushy, fine, terminal arborization in medulla layer M9 and the other forms a terminal arborization in lobula layers 2 and 3 with mix of bleb-type and fine terminal branches (Morante and Desplan, 2008; Fischbach and Dittrich, 1989). It seems to be capable of both glutamatergic and GABAergic neurotransmission.

The glutamate neurotransmitter was assessed by labelling cells with a vGlut[CNSIII]-GAL4 driver (FBti0129148) (Raghu and Borst, 2011). The GABA neurotransmitter was assessed by the intersection of the expression of the VGAT-GAL4 driver (FBtp0069181) and an antibody against GABA (Raghu et al., 2013). Pre- versus postsynaptic innervation judged by scoring of terminal morphology from figures in Fischbach and Dittrich (1989) as assessed by FlyBrain Neuron DB.