FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term type I neuroblast ID (Ontology) FBbt:00100532 (Fly Anatomy)
Definition Neuroblast that divides asymmetrically to regenerate itself and produce a smaller ganglion mother cell that generates two daughter neurons. Many of these neuroblasts switch to type 0 division at some point during their development, to produce daughters that develop into neurons with no further division (Baumgardt et al., 2014).[ FlyBase:FBrf0207387 FlyBase:FBrf0225698 ]
Comment Bayraktar et al. (2010) show that type I neuroblasts can be distinguished from type II neuroblasts as being Deadpan-, Prospero- and Asense-positive.
Links to External Ontologies
VFB:FBbt_00100532
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      70
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       1
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       3
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      46
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
 type I neuroblast (all annotations which use CV term, excluding "NOT" statements)      70      9      4     49
     type I neuroblast | decreased number | larval stage       2       --       --       2
     type I neuroblast | early third instar larval stage       2       --       --       1
     type I neuroblast | ectopic | larval stage | somatic clone       4       --       --       --
     type I neuroblast | first instar larval stage       3       --       --       2
     type I neuroblast | increased number       4       --       --       2
     type I neuroblast | increased number | larval stage | somatic clone       2       --       --       --
     type I neuroblast | increased number | third instar larval stage      11       --       --      10
     type I neuroblast | larval stage       9       --       --       8
     type I neuroblast | larval stage | increased number       7       --       --       4
     type I neuroblast | larval stage | somatic clone       6       --       --       2
     type I neuroblast | larval stage | somatic clone | increased number       3       --       --       2
     type I neuroblast | pupal stage P6       2       --       --       1
     type I neuroblast | second instar larval stage       3       --       --       2
     type I neuroblast | somatic clone       2       --       --       --
     type I neuroblast | somatic clone | third instar larval stage      13       --       2      7
     type I neuroblast | third instar larval stage       9       --       1      6
Spanning Tree (Parents/Children)
Only view relationship:
  somatic stem cell
   |__neuroblast
       |__type I neuroblast  142 rec.
           |__neuroblast BAla1
           |__neuroblast BAla2
           |__neuroblast BAla3
           |__neuroblast BAla4
           |__neuroblast BAlc 1 rec.
           |__neuroblast BAlp1
           |__neuroblast BAlp3
           |__neuroblast BAlp4
           |__neuroblast BAlv
           |__neuroblast BAmas1
           |__neuroblast BAmas2 3 rec.
           |   |__neuroblast BAmas2 (female)
           |   |__neuroblast BAmas2 (male)
           |__neuroblast BAmd1
           |   |__neuroblast BAmd1 (female)
           |   |__neuroblast BAmd1 (male)
           |__neuroblast BAmd2
           |__neuroblast BAmv1
           |__neuroblast BAmv2
           |__neuroblast BAmv3 1 rec.
           |__neuroblast BLAd1
           |__neuroblast BLAd2
           |__neuroblast BLAd3
           |__neuroblast BLAd5
           |__neuroblast BLAl1
           |__neuroblast BLAl2
           |__neuroblast BLAv1
           |__neuroblast BLAv2
           |__neuroblast BLAvm
           |__neuroblast BLD1
           |__neuroblast BLD2
           |__neuroblast BLD3
           |__neuroblast BLD4
           |__neuroblast BLD5
           |__neuroblast BLD6
           |__neuroblast BLP1
           |__neuroblast BLP2
           |__neuroblast BLP4
           |__neuroblast BLVa1
           |__neuroblast BLVa2
           |__neuroblast BLVa2a
           |__neuroblast BLVa2b
           |__neuroblast BLVa2c
           |__neuroblast BLVp1
           |__neuroblast BLVp2
           |__neuroblast CM5
           |__neuroblast CM6
           |__neuroblast CP1
           |__neuroblast CP4
           |__neuroblast CP5
           |__neuroblast CP6
           |__neuroblast DALcl1
           |__neuroblast DALcl2
           |__neuroblast DALcm1
           |__neuroblast DALcm2
           |__neuroblast DALd
           |__neuroblast DALl1
           |__neuroblast DALl2
           |__neuroblast DALv1
           |__neuroblast DALv2 6 rec.
           |__neuroblast DALv3
           |__neuroblast DAMd1
           |__neuroblast DPLal1
           |__neuroblast DPLal2
           |__neuroblast DPLal3
           |__neuroblast DPLam
           |__neuroblast DPLc1
           |__neuroblast DPLc2
           |__neuroblast DPLc3
           |__neuroblast DPLc5
           |__neuroblast DPLc6
           |__neuroblast DPLd
           |__neuroblast DPLl1
           |__neuroblast DPLl2
           |__neuroblast DPLl3
           |__neuroblast DPLm1
           |__neuroblast DPLm2
           |__neuroblast DPLp1
           |__neuroblast DPLp2
           |__neuroblast DPLpv
           |__neuroblast DPMl1
           |__neuroblast DPMl2
           |__neuroblast DPMpl1
           |__neuroblast DPMpl2
           |__neuroblast DPMpl3
           |__neuroblast LHa4
           |__neuroblast MBp1
           |__neuroblast MBp2
           |__neuroblast MBp3
           |__neuroblast MBp4
           |__neuroblast SLPal4
           |__neuroblast SLPpm4
           |__neuroblast SMPad1
           |   |__neuroblast SMPad1 (female)
           |   |__neuroblast SMPad1 (male)
           |__neuroblast SMPad2
           |__neuroblast SMPad4
           |__neuroblast VLPl1
           |__neuroblast VPNd2
           |__neuroblast VPNd3
           |__neuroblast VPNd4
           |__neuroblast VPNp2
           |__neuroblast VPNp3
           |__neuroblast VPNv1
           |__neuroblast VPNv2
           |__neuroblast VPNv3
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VFB:FBbt_00100532