FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term antennal basiconic sensillum ab2 ID (Ontology) FBbt:00067002 (Fly Anatomy)
Definition Large olfactory basiconic sensillum of the antenna that houses the dendrites of two highly-branched olfactory receptor neurons (Shanbhag et al., 1999), expressing Or59b and Or85a (Couto et al., 2005; Grabe et al., 2016). It has a pore size of about 50 nm and a pore density of about 19 pores per square micrometer (Shanbhag et al., 1999). There are more of these sensilla in females than males (Shanbhag et al., 1999; Grabe et al, 2016).[ FlyBase:FBrf0128642 FlyBase:FBrf0187305 FlyBase:FBrf0233453 ]
Also Known As"antennal basiconic sensillum LB-I" ; "antennal large basiconic sensillum ab2" ; "antennal sensillum basiconicum LB-I"
CommentCorresponds to LB-I of Shanbhag et al. (1999) based on number of neurons and increased number present in female than male.
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VFB:FBbt_00067002
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 antennal basiconic sensillum ab2 (all annotations which use CV term, excluding "NOT" statements)
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basiconic sensillum of antennal segment 3__
olfactory sensory organ____________________|
                                           large basiconic sensillum of antennal segment 3
                                            |__antennal basiconic sensillum ab2  8 rec.
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VFB:FBbt_00067002