obsolete thoracic relay interneuron true TI AL-DN2(TI) fly_anatomy.ontology antennal lobe descending neuron 2 (TI) Obsoleted due to equivalence with DNb05 (Sturner et al., 2024 - doi:10.1101/2024.06.04.596633). A unilateral interneuron with extensive arborization in one antennal lobe and the posterior brain, and a process that extends into the thorax. Its cell body is located anterodorsal to the antennal lobe with the cell body fiber running to the area posterior to the antennal lobe before bifurcating. One branch enters the antennal lobe, via the antenno-subesophageal tract, and arborizes profusely in glomeruli VA3, DL1/DA3 and VP1-3. The other branch bifurcates again, with one branch projecting to and arborizing in the posterior brain and the other descending to the ventral nerve cord. FBbt:00003996 descending neuron of the anterior ventral brain DNb05