FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval A02n neuron ID (Ontology) FBbt:00111247 (Fly Anatomy)
Definition Larval interneuron of the A02n group that is early-born in the NB2-1 Notch OFF primary hemilineage (Mark et al., 2021). There are two of these cells per hemineuromere and they are morphologically indistinguishable (Gerhard et al., 2017). Its soma is located in the ventral cell body rind region close to the medial part of the neuromere. Its soma is more ventrally-located than that of the A02m neuron.[ FlyBase:FBrf0228257 FlyBase:FBrf0237057 FlyBase:FBrf0249021 ]
Also Known As "pseudolooper-4"
Comment Listed as PMSI in Mark et al. (2021) supplement, but lacks characteristic dorsal loop (Zwart et al., 2016) and not included in PMSI group by Kohsaka et al. (2019) - FBrf0242656. Supplements of Mark et al. (2021) and Zarin et al. (2019) - FBrf0244727 say these, or the A02m neurons, may be the mCSI neurons.
Links to External Ontologies
VFB:FBbt_00111247
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interneuron
 |__larval interneuron__________________________
Notch OFF hemilineage primary neuron            |
 |__NB2-1 Notch OFF hemilineage primary neuron__|
NB2-1 lineage primary neuron                    |
 |__lineage NB2-1 primary interneuron___________|
 |__NB2-1 Notch OFF hemilineage primary neuron__|
primary interneuron                             |
 |__lineage NB2-1 primary interneuron___________|
larval CNS neuron                               |
 |__larval interneuron__________________________|
                                                larval A02n neuron
                                                 |__larval abdominal 1 A02n neuron
                                                 |__larval abdominal 3 A02n neuron
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Is a lineage NB2-1 primary interneuron
NB2-1 Notch OFF hemilineage primary neuron
larval interneuron
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VFB:FBbt_00111247