FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval midline neuron ID (Ontology) FBbt:00016016 (Fly Anatomy)
Definition Larval unpaired primary neuron with its cell body found along the midline of the nervous system (Fontana and Crews, 2012). There are around 18 of these per segment in the late embryo, which are derived from midline precursors (MP1-6) or the median neuroblast (MNB) (Fontana and Crews, 2012). Two sets of neurons can be distinguished; ventral neurons (including MP3 and VUM neurons) and medial neurons (including MP1 and MNB descendants) (Kearney et al., 2004).[ FlyBase:FBrf0180108 FlyBase:FBrf0219766 ]
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Links to External Ontologies
VFB:FBbt_00016016
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       4
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       8
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       1
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 midline neuron (all annotations which use CV term, excluding "NOT" statements)       4    106     26      4
     larval midline neuron | ectopic | embryonic stage 16       1       --       --       1
     larval midline neuron | ectopic | embryonic stage 17       3       --       --       1
Spanning Tree (Parents/Children)
Only view relationship:
larval neuron
 |__larval CNS neuron____________
neuron                           |
 |__primary neuron_______________|
 |__unpaired neuron______________|
ectodermal derivative            |
 |__ventral ectoderm derivative__|
CNS neuron                       |
 |__larval CNS neuron____________|
                                 larval midline neuron  345 rec.
                                  |__larval medial midline neuron 126 rec.
                                  |   |__larval A00c neuron(+) 7 rec.
                                  |   |__larval A00g neuron(+)
                                  |   |__larval Ladder neuron(+) 5 rec.
                                  |   |__larval MP1 neuron(+) 111 rec.
                                  |   |__larval thoracic ladder-1 neuron 3 rec.
                                  |__larval ventral midline neuron 134 rec.
                                      |__larval MP3 neuron(+) 29 rec.
                                      |__larval VUM neuron(+) 123 rec.
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Is a ventral ectoderm derivative
primary neuron
unpaired neuron
larval CNS neuron
Develops from midline neuroblast of ventral nervous system
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Synonyms
Secondary IDs
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VFB:FBbt_00016016