has fasciculating neuron projection innervates protocerebral bridge glomerulus 6 protocerebral bridge glomerulus 7 fascicle pb-fb tract pb-fb tract X fly_anatomy.ontology VFB:FBbt_00007504 FBbt:00007504 Lateral tract of the adult central complex that contains columnar neurons of lineage DM3 (neuroblast X) and innervates the second most lateral two protocerebral bridge glomeruli (6 and 7) and the ipsilateral medial fan-shaped body (Hanesch et al., 1989; Boyan et al., 2017). adult DM3 lineage neuron