FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval thoracic perisympathetic organ ID (Ontology) FBbt:00003217 (Fly Anatomy)
Definition Neurosecretory organ of a larval thoracic segment, formed by the axons of Tv neurons, wrapped around support cells, forming a compact, globular structure that projects dorsally above the surface of its neuromere (Brown et al., 2006).[ FlyBase:FBrf0190279 FlyBase:FBrf0195119 FlyBase:FBrf0201188 FlyBase:FBrf0214320 ]
Also Known As "larval dorsal neurohemal organ" ; "tPSO"
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Records annotated with this term OR any of its CHILD TERMS
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Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN      20
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       2
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       3
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       4
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 larval thoracic perisympathetic organ (all annotations which use CV term, excluding "NOT" statements)      20      6      5      5
     larval thoracic perisympathetic organ | ectopic       2       --       --       2
Spanning Tree (Parents/Children)
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cell cluster organ__________
endocrine system component__|
gland_______________________|
                            neurohemal organ
                             |__larval thoracic perisympathetic organ  36 rec.
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Is a neurohemal organ
Part of larval thoracic segment
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