FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term transmedullary neuron Tm37 ID (Ontology) FBbt:20007274 (Fly Anatomy)
Definition Adult transmedullary neuron with its soma anterior-lateral to the medulla (Schlegel et al., 2024; Dorkenwald et al., 2024; Nern et al., 2025). In the medulla, it is mostly postsynaptic in layers M3-M8, spanning around 5 columns (Nern et al., 2025). It has pre- and post-synapses in 1 or 2 columns of lobula layers 4-6 (Nern et al., 2025). Its predicted neurotransmitter is glutamate (Eckstein et al., 2024; Nern et al., 2025). There are approximately 250 of these cells per hemisphere (Nern et al., 2025).[ FlyBase:FBrf0259490 FlyBase:FBrf0260535 FlyBase:FBrf0260545 FlyBase:FBrf0260546 FlyBase:FBrf0262545 ]
Also Known As "adult CB3864 neuron" ; "CB3864" ; "Tm37" (for all, see Synonyms field below)
Comment Cell type from Schlegel et al. (2024), based on FlyWire v783 (FAFB) data (Dorkenwald et al., 2024; Schlegel et al., 2024), identified at light level by Nern et al. (2025). Soma location is based on the closest annotated neuropil region in FlyWire.
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VFB:FBbt_20007274
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optic lobe intrinsic columnar neuron
 |__transmedullary neuron_______
adult neuron                    |
 |__adult glutamatergic neuron__|
glutamatergic neuron            |
 |__adult glutamatergic neuron__|
                                transmedullary neuron Tm37
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Is a transmedullary neuron
adult glutamatergic neuron
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VFB:FBbt_20007274