FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term neuroblast NB5-1 ID (Ontology) FBbt:00001424 (Fly Anatomy)
Definition Neuroblast that delaminates at S5 in the medial column that generates approximately 6-9 local interneurons, some of which project across the posterior commissure (Schmid et al., 1999). In the embryo, one of these cells can be found in each hemisegment from S2-A8 (Birkholz et al., 2013; Urbach et al., 2016). It does not generate a postembryonic lineage and, at least in thoracic segments, it is lost before the end of embryogenesis (Lacin and Truman, 2016).[ FlyBase:FBrf0098344 FlyBase:FBrf0112030 FlyBase:FBrf0221210 FlyBase:FBrf0228122 FlyBase:FBrf0231327 FlyBase:FBrf0232096 ]
Also Known As"lineage 26 neuroblast" ; "lineage NB5-1 neuroblast" ; "NB 26" (for all, see Synonyms field below)
CommentSchmid et al. (1999) comment that NB5-2 may give rise to a larger number of clones, including at least one motorneuron, but were not observed due to observational restrictions.
Links to External Ontologies
VFB:FBbt_00001424
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 neuroblast NB5-1 (all annotations which use CV term, excluding "NOT" statements)
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central nervous system
 |__segmentally-repeated neuroblast__
neuroblast                           |
 |__stage 5 neuroblast_______________|
 |__segmentally-repeated neuroblast__|
ectodermal derivative                |
 |__segmentally-repeated neuroblast__|
                                     neuroblast NB5-1  11 rec.
                                      |__labial neuroblast NB5-1
                                      |__maxillary neuroblast NB5-1
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Is a stage 5 neuroblast
segmentally-repeated neuroblast
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Synonyms
  • "lineage 26 neuroblast" EXACT[ FlyBase:FBrf0231327 ]
    "lineage NB5-1 neuroblast" EXACT
    "NB 26" EXACT[ FlyBase:FBrf0209606 ]
    "neuroblast 26" EXACT SECONDARY_VNC_LINEAGE
    "neuroblast NB5-1" EXACT PRIMARY_VNC_LINEAGE
Secondary IDs
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VFB:FBbt_00001424