FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval EW neuron ID (Ontology) FBbt:00001582 (Fly Anatomy)
Definition Larval interneuron that is derived from neuroblast NB7-3. These are the Notch OFF cells born from the three GMCs produced by NB7-3 (Lee and Lundell, 2007). They are all primary neurons, since NB7-3 does not generate a secondary lineage (Lacin and Truman, 2016). There are usually three of these per hemineuromere from S2-A8, but only two are found in each mandibular (S1) hemineuromere (Rickert et al., 2018). They project contralaterally (Higashijima et al., 1996; Rickert et al., 2018).[ FlyBase:FBrf0086454 FlyBase:FBrf0090460 FlyBase:FBrf0200999 FlyBase:FBrf0231327 FlyBase:FBrf0238045 ]
Also Known As "7-3I" ; "lineage NB7-3 interneuron"
Comment
Links to External Ontologies
VFB:FBbt_00001582
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN      30
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       1
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      18
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 larval EW neuron (all annotations which use CV term, excluding "NOT" statements)      31      1      1     19
     larval EW neuron | embryonic stage       9       --       --       4
Spanning Tree (Parents/Children)
Only view relationship: 
interneuron
 |__larval interneuron____________________
 |__primary interneuron___________________|
ectodermal derivative                     |
 |__NB7-3 lineage neuron__________________|
primary neuron                            |
 |__Notch OFF hemilineage primary neuron__|
 |__NB7-3 lineage neuron__________________|
 |__primary interneuron___________________|
Notch OFF hemilineage neuron              |
 |__Notch OFF hemilineage primary neuron__|
CNS neuron                                |
 |__NB7-3 lineage neuron__________________|
larval CNS neuron                         |
 |__larval interneuron____________________|
                                          larval EW neuron  100 rec.
                                           |__EW1 neuron 33 rec.
                                           |   |__larval serotonergic A1 neuron 1
                                           |   |__larval serotonergic A2 neuron 1
                                           |   |__larval serotonergic A3 neuron 1
                                           |   |__larval serotonergic A4 neuron 1
                                           |   |__larval serotonergic A5 neuron 1
                                           |   |__larval serotonergic A6 neuron 1
                                           |   |__larval serotonergic A7 neuron 1
                                           |__EW2 neuron 25 rec.
                                           |   |__larval serotonergic A1 neuron 2
                                           |   |__larval serotonergic A2 neuron 2
                                           |   |__larval serotonergic A3 neuron 2
                                           |   |__larval serotonergic A4 neuron 2
                                           |   |__larval serotonergic A5 neuron 2
                                           |   |__larval serotonergic A6 neuron 2
                                           |   |__larval serotonergic A7 neuron 2
                                           |__EW3 neuron 29 rec.
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Is a Notch OFF hemilineage primary neuron
NB7-3 lineage neuron
larval interneuron
primary interneuron
Part of
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Synonyms
  • "7-3I" EXACT
    "lineage NB7-3 interneuron" EXACT
Secondary IDs
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VFB:FBbt_00001582