FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term flange ID (Ontology) FBbt:00045050 (Fly Anatomy)
Definition A small, bilaterally paired, triangular synaptic neuropil domain that lies above the anterior end of the saddle, on both sides of the esophagus (Ito et al., 2014). It lies at the root of the median bundle, behind the prow (Ito et al., 2014). It forms the dorsal part of the adult tritocerebrum, developing from the centromedial and dorsal domains of the larval tritocerebrum (Hartenstein et al., 2018).[ FlyBase:FBrf0224194 FlyBase:FBrf0237252 ]
Also Known As"dorsal tritocerebrum" ; "FLA" ; "TRd"
CommentThe flange corresponds to the dorsoposterior part of the subesophageal ganglion (SOG) of Chiang et al. (2011) and to part of the anterior periesophageal neuropils (Ito et al., 2014).
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VFB:FBbt_00045050
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 flange (all annotations which use CV term, excluding "NOT" statements)
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adult intercalary segment
 |__adult tritocerebrum_____________
tritocerebrum                       |
 |__adult tritocerebrum_____________|
adult cerebrum                      |
 |__adult tritocerebrum_____________|
 |__adult periesophageal neuropils__|
multi-cell-component structure      |
 |__synaptic neuropil domain________|
synaptic neuropil                   |
 |__synaptic neuropil domain________|
synaptic neuropil block             |
 |__adult periesophageal neuropils__|
adult neuromere                     |
 |__adult tritocerebrum_____________|
                                    flange  322 rec.
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Is a synaptic neuropil domain
Develops from centromedial domain of larval tritocerebrum
dorsal domain of larval tritocerebrum
Part of adult tritocerebrum
adult periesophageal neuropils
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VFB:FBbt_00045050