FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term neuroblast NB7-4 ID (Ontology) FBbt:00001381 (Fly Anatomy)
Definition Neuroblast that generates several glia during the embryonic stage, including channel, subperineurial and cell body glia, as well as interneurons (Schmid et al., 1999; Beckervordersandforth et al., 2008). In the embryo, one of these cells can be found in each hemisegment from S1-A8 (Birkholz et al., 2013; Urbach et al., 2016). In the larva, it resumes proliferation in segments S3 to A1 (Lacin and Truman, 2016). The neurons that develop from this neuroblast after larval hatching form postembryonic lineage 23, which has its cell bodies located laterally, just ventral to the neuropil (Birkholz et al., 2015; Lacin and Truman, 2016).[ FlyBase:FBrf0055900 FlyBase:FBrf0073294 FlyBase:FBrf0084809 FlyBase:FBrf0112030 FlyBase:FBrf0180161 FlyBase:FBrf0205499 FlyBase:FBrf0221210 FlyBase:FBrf0228122 FlyBase:FBrf0231327 FlyBase:FBrf0232096 ]
Also Known As"lineage 23 neuroblast" ; "lineage NB7-4 neuroblast" ; "NB 23" (for all, see Synonyms field below)
CommentLacin and Truman (2016) do not show data for neuromeres anterior to S3 (labial).
Links to External Ontologies
VFB:FBbt_00001381
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
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 neuroblast NB7-4 (all annotations which use CV term, excluding "NOT" statements)
     neuroblast NB7-4 | germline clone
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central nervous system
 |__segmentally-repeated neuroblast__
neuroblast                           |
 |__stage 1 neuroblast_______________|
 |__neuroglioblast___________________|
 |__segmentally-repeated neuroblast__|
ectodermal derivative                |
 |__segmentally-repeated neuroblast__|
                                     neuroblast NB7-4  31 rec.
                                      |__abdominal neuroblast NB7-4
                                      |   |__abdominal 1 neuroblast NB7-4
                                      |__labial neuroblast NB7-4
                                      |__mandibular neuroblast NB7-4
                                      |__maxillary neuroblast NB7-4
                                      |__thoracic neuroblast NB7-4
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Is a stage 1 neuroblast
neuroglioblast
segmentally-repeated neuroblast
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VFB:FBbt_00001381