FB2026_03 , released September 17, 2026
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Term tangential neuron CT1 ID (Ontology) FBbt:00048245 (Fly Anatomy)
Definition Large tangential cell that spans the opposing faces of the medulla layer M10 and lobula layer 1 to form modular associations, one per column, with both T4 and T5 in both neuropil regions (Shinomiya et al., 2019). It is strongly presynaptic to T4 and T5 neurons (Shinomiya et al., 2019). It has its cell body near the midline in the anterior central brain, close to the antennal lobes, and it projects to the contralateral optic lobe. There is one of these cells per hemisphere and it is GABAergic (Takemura et al., 2017).[ FlyBase:FBrf0235606 FlyBase:FBrf0241236 FlyBase:FBrf0242197 ]
Also Known As"CT1"
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VFB:FBbt_00048245
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 tangential neuron CT1 (all annotations which use CV term, excluding "NOT" statements)
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GABAergic neuron
 |__adult GABAergic neuron_________
adult optic lobe intrinsic neuron  |
 |__optic lobe amacrine neuron_____|
adult neuron                       |
 |__adult GABAergic neuron_________|
adult interneuron                  |
 |__optic lobe tangential neuron___|
                                   tangential neuron CT1  3 rec.
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Is a optic lobe amacrine neuron
optic lobe tangential neuron
adult GABAergic neuron
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VFB:FBbt_00048245