FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term adult olfactory receptor neuron Or9a ID (Ontology) FBbt:00067009 (Fly Anatomy)
Definition 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).[ FlyBase:FBrf0179238 FlyBase:FBrf0187305 FlyBase:FBrf0233453 FlyBase:FBrf0262710 ]
Also Known As"adult ORN Or9a" ; "odorant receptor neuron Or9a" ; "ORN (Or9a)" (for all, see Synonyms field below)
CommentAntennal 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.
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VFB:FBbt_00067009
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 adult olfactory receptor neuron Or9a (all annotations which use CV term, excluding "NOT" statements)
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eo neuron
 |__antennal olfactory receptor neuron of basiconic sensillum__
adult antennal olfactory receptor neuron                       |
 |__antennal olfactory receptor neuron of basiconic sensillum__|
adult antennal lobe receptor neuron                            |
 |__bilateral antennal lobe receptor neuron____________________|
                                                               adult olfactory receptor neuron Or9a  4 rec.
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Is a antennal olfactory receptor neuron of basiconic sensillum
bilateral antennal lobe receptor neuron
Develops from antennal olfactory receptor neuron precursor Nba
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Synonyms
  • "adult ORN Or9a" EXACT
    "odorant receptor neuron Or9a" EXACT
    "odorant receptor neuron VM3" RELATED
    "ORN (Or9a)" EXACT
    "ORN ab8B" EXACT[ FlyBase:FBrf0226805 ]
    "ORN pb9A" EXACT[ FlyBase:FBrf0239032 ]
    "ORN_VM3" EXACT VFB_SYMBOL
Secondary IDs
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DoOR:Or9a
FlyBrain_NDB:10430
VFB:FBbt_00067009