FB2026_03 , released September 17, 2026
CV Term Report
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Term larval NB1-1 segmental nerve primary motor neuron ID (Ontology) FBbt:00001534 (Fly Anatomy)
Definition Larval primary motor neuron that develops from neuroblast NB1-1 and fasciculates with the segmental nerve (Bossing et al., 1996). It is the second motor neuron to arise from NB1-1 and is only found in thoracic segments (Bossing et al., 1996; Rickert et al., 2018). Its axon terminates amongst ventrolateral muscles without a detectable end-plate (Bossing et al., 1996).[ FlyBase:FBrf0090460 FlyBase:FBrf0238045 ]
Also Known As"1-1Ms" ; "CoA" ; "cousin of aCC"
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VFB:FBbt_00001534
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neuron
 |__thoracic neuron_____________________
ectodermal derivative                   |
 |__ventral ectoderm derivative_________|
NB1-1 lineage primary neuron            |
 |__lineage NB1-1 primary motor neuron__|
larval efferent neuron                  |
 |__embryonic/larval motor neuron_______|
primary motor neuron                    |
 |__embryonic/larval motor neuron_______|
 |__lineage NB1-1 primary motor neuron__|
                                        larval NB1-1 segmental nerve primary motor neuron
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Is a thoracic neuron
embryonic/larval motor neuron
lineage NB1-1 primary motor neuron
ventral ectoderm derivative
Develops from thoracic neuroblast NB1-1
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VFB:FBbt_00001534