fasciculates with develops from expresses sends synaptic output throughout has sensory dendrite in Or69a antennal lobe glomerulus D 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 adult pheromone-sensing neuron antennal basiconic sensillum ab9 adult olfactory receptor neuron Or69a ORN (Or69aA/aB) ORN_D ORN ab9A fly_anatomy.ontology ORN ab9X odorant receptor neuron D FlyBrain_NDB:10417 VFB:FBbt_00067034 Adult olfactory receptor neuron (ORN) that expresses Or69a (A and B transcripts) (Benton et al., 2025). Its dendrite transduces signals from antennal basiconic sensillum ab9 and it responds to a range of pheromonal and plant matter olfactory stimuli (Benton et al., 2025). It innervates antennal lobe glomerulus D bilaterally, fasciculating with the antennal lobe commissure (Kaur et al., 2019). It develops from an Nba precursor (Benton et al., 2025). There are approximately 25 of these on each side (Benton et al., 2025). odorant receptor neuron OR69a DoOR:Or69a adult ORN Or69a FBbt:00067034 ORN_D FBbt:00067037