has fasciculating neuron projection innervates protocerebral bridge glomerulus 8 protocerebral bridge glomerulus 9 fascicle pb-fb tract pb-fb tract W FBbt:00007503 Lateral tract of the adult central complex that contains columnar neurons of lineage DM4 (neuroblast W) and innervates the lateral two protocerebral bridge glomeruli (8 and 9) and the ipsilateral lateral fan-shaped body (Hanesch et al., 1989; Boyan et al., 2017). fly_anatomy.ontology VFB:FBbt_00007503 adult DM4 lineage neuron