fasciculates with develops from expresses sends synaptic output throughout has sensory dendrite in Or49a Or85f sensory epithelial cell antennal lobe glomerulus DL4 adult antennal lobe commissure sNPF neuron antennal olfactory receptor neuron precursor Nba antennal olfactory receptor neuron of basiconic sensillum adult antennal lobe receptor neuron bilateral antennal lobe receptor neuron adult neurosecretory neuron adult peptidergic neuron antennal basiconic sensillum ab10 adult olfactory receptor neuron Or49a/85f FBbt:00067055 FlyBrain_NDB:10407 odorant receptor neuron DL4 DoOR:Or49a odorant receptor neuron Or49a ORN ab10B ORN ab10A ORN_DL4 odorant receptor neuron Or85f FBbt:00067058 adult ORN Or85f/49a DoOR:Or85f ORN (Or49a/85f) adult olfactory receptor neuron Or49a Adult olfactory receptor neuron (ORN) that expresses Or49a and Or85f (Benton et al., 2025). Its dendrite transduces signals from basiconic sensillum ab10 and it responds to iridoids (Benton et al., 2025). Its axon innervates antennal lobe glomerulus DL4, bilaterally (Benton et al., 2025). It expresses sNPF (Carlsson et al., 2010). It develops from an Nba precursor (Benton et al., 2025). There are approximately 20-25 of these cells per side in females and around 10 in males (Grabe et al., 2016; Benton et al., 2025). adult ORN Or49a/85f VFB:FBbt_00067055 ORN Ab10A ORN_DL4 fly_anatomy.ontology adult olfactory receptor neuron Or85f