FB2026_03 , released September 17, 2026
CV Term Report
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Term serotonergic abdominal giant (male) neuron ID (Ontology) FBbt:00110663 (Fly Anatomy)
Definition Male-specific, serotonergic neuron that is located in the posterior region of the abdominal ganglion. It expresses the male isoform of fruitless. There are eight of these neurons per organism in a dorsal cluster and they have relatively large cell bodies. They fasciculate with the abdominal nerve trunk and innervate the male reproductive organs. Members of this group innervate the testicular ducts, seminal vesicles, accessory glands and/or an anterior part of the ejaculatory duct.[ FlyBase:FBrf0134722 FlyBase:FBrf0135850 FlyBase:FBrf0179138 FlyBase:FBrf0222499 ]
Also Known As"s-Abg neuron" ; "SAbg" ; "SAbg neuron" (for all, see Synonyms field below)
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VFB:FBbt_00110663
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 serotonergic abdominal giant (male) neuron (all annotations which use CV term, excluding "NOT" statements)
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abdominal neuron
 |__adult posterior abdominal ganglion neuron__
adult abdomen                                  |
 |__adult posterior abdominal ganglion neuron__|
neuron                                         |
 |__fruitless expressing neuron________________|
serotonergic neuron                            |
 |__adult serotonergic neuron__________________|
male-specific anatomical entity                |
 |__male-specific neuron_______________________|
sexually-dimorphic neuron                      |
 |__male-specific neuron_______________________|
adult efferent neuron                          |
 |__adult posterior abdominal ganglion neuron__|
adult aminergic neuron                         |
 |__adult serotonergic neuron__________________|
adult VNC neuron                               |
 |__adult posterior abdominal ganglion neuron__|
                                               serotonergic abdominal giant (male) neuron  5 rec.
                                                |__adult dorsal posterior Ilp7 (male) neuron 3 rec.
                                                |__serotonergic abdominal giant (male) neuron 1
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Is a fruitless expressing neuron
male-specific neuron
adult serotonergic neuron
adult posterior abdominal ganglion neuron
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VFB:FBbt_00110663