part of fasciculates with develops from capable of capable of part of expresses sends synaptic output throughout has sensory dendrite in Or35a antennal lobe glomerulus VC3 adult antennal lobe commissure antennal olfactory receptor neuron precursor Nba antennal olfactory receptor neuron of coeloconic sensillum adult antennal lobe receptor neuron bilateral antennal lobe receptor neuron adult olfactory receptor neuron Or35a adult ORN ac3 Olfactory receptor neuron (ORN) that expresses the Odorant receptor (Or) 35a (Benton et al., 2025). Its dendrite transduces signals from an antennal coeloconic ac3 sensillum (of either type) (Benton et al., 2009; Prieto-Godino et al., 2017). Its axon innervates antennal lobe glomerulus VC3, bilaterally, fasciculating with the antennal lobe commissure (Couto et al., 2005; Schlegel et al., 2021). It detects alcohols produced by yeast and is required for the enhancement of the proboscis extension reflex in response to yeast odors in combination with low-viscosity food (Oh et al., 2021). It develops from an Nba precursor (Benton et al., 2025). There are approximately 15-20 of these cells on each side (Benton et al., 2025). ORN_VC3 A subset of these cells also weakly express Ir76a (Benton et al., 2025). ORN (VC3m) ionotropic receptor neuron VC3 FlyBrain_NDB:10432 FlyBrain_NDB:10399 fly_anatomy.ontology ORN_VC3 VFB:FBbt_00067039 adult ORN ac3B DoOR:Or35a adult ORN (Or35a) odorant receptor neuron VC3 FBbt:00067039 adult ORN Or35a DoOR:ac3B antennal coeloconic sensillum ac3 sensory perception proboscis extension reflex detection of molecule of fungal origin