fasciculates with develops from expresses sends synaptic output throughout has sensory dendrite in Or9a antennal lobe glomerulus VM3 adult antennal lobe commissure antennal olfactory receptor neuron precursor Nba antennal olfactory receptor neuron of basiconic sensillum adult antennal lobe receptor neuron bilateral antennal lobe receptor neuron antennal basiconic sensillum ab8 adult olfactory receptor neuron Or9a Antennal basiconic sensillum ab4 is bidendritic. According to Hallem et al., 2004, adult ORN 43b corresponds to the functionally defined ORN ab8A. We can therefore deduce that adult ORN 9a corresponds to ORN ab8B. adult ORN Or9a VFB:FBbt_00067009 DoOR:Or9a odorant receptor neuron VM3 ORN ab8B Adult olfactory receptor neuron (ORN) that expresses Or98a (Benton et al., 2025). Its dendrite transduces signals from antennal basiconic sensillum ab8 and it responds to esters, alcohols and ketones (Benton et al., 2025). Its axon innervates antennal lobe glomerulus VM3, bilaterally (Benton et al., 2025). It develops from an Nba precursor (Benton et al., 2025). There are approximately 20 of these cells on each side (Benton et al., 2025). FBbt:00067009 ORN_VM3 ORN (Or9a) odorant receptor neuron Or9a ORN pb9A ORN_VM3 FlyBrain_NDB:10430 fly_anatomy.ontology