has soma location synapses restricted to region adult intrinsic protocerebral bridge neuron VFB:FBbt_00003666 fly_anatomy.ontology Intrinsic neuron of the adult protocerebral bridge. These neurons have somas located in the posterior cell body rind, medial and ventral to the Kenyon cell soma, and fibers that enter the protocerebral bridge laterally. FBbt:00003666 PB LN neuron intrinsic pb neuron protocerebral bridge neuron large field neuron of the central complex intrinsic neuron of the central complex adult posterior brain cell body rind