FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term lamina intrinsic neuron Lai ID (Ontology) FBbt:00003746 (Fly Anatomy)
Definition Intrinsic amacrine neuron of the lamina with arborizations spanning the proximal and distal lamina, whose cell body lies proximal to the lamina (Fischbach and Dittrich, 1989; Meinertzhagen and Sorra, 2001). It has extensive arborizations and forms a substantial number of presynaptic terminals with columnar neuron T1 and epithelial glia (Rivera-Alba et al., 2011). It receives strong input from each of photoreceptors R1-R6, and from lamina wide-field cells (Rivera-Alba et al., 2011). It is a glutamatergic neuron (Davis et al., 2020). There are approximately 210 of these cells on each side (Nern et al., 2025).[ FlyBase:FBrf0049410 FlyBase:FBrf0159582 FlyBase:FBrf0216925 FlyBase:FBrf0244935 FlyBase:FBrf0262545 ]
Also Known As "Lai"
Comment Cell connectivity in the lamina was determined by analysis of semi-automated EM reconstruction of 749 serial sections of 21 complete lamina cartridges. The number of synaptic connections for Lai (presynaptic/postsynaptic) in a single lamina cartridge with each cell type was the following: R1 (-/36), R2 (1/39), R3 (-/39), R4 (2/37), R5 (2/35), R6 (-/40), L1 (1/-), L2 (1/-), L3 (10/-), L4 (4/2), L5 (4/-), Lai (1), T1 (54/1), C2 (1/5), C3 (1/9), Lawf (-/24) and epithelial glia (87/-) (Rivera-Alba et al., 2011).
Links to External Ontologies
VFB:FBbt_00003746
Annotations
Records annotated with this term OR any of its CHILD TERMS
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Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN       3
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       1
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       1
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Relevant FlyBase reports
 Alleles   Insertions Constructs
 lamina intrinsic neuron Lai (all annotations which use CV term, excluding "NOT" statements)       5      3     18      1      6
Spanning Tree (Parents/Children)
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supraesophageal ganglion neuron
 |__adult optic lobe neuron_________________
adult optic lobe intrinsic neuron           |
 |__optic lobe amacrine neuron______________|
optic lobe tangential neuron                |
 |__lamina tangential neuron________________|
anterior ectoderm derivative                |
 |__adult optic lobe neuron_________________|
adult neuron                                |
 |__adult glutamatergic neuron______________|
secondary neuron                            |
 |__Notch OFF hemilineage secondary neuron__|
Notch OFF hemilineage neuron                |
 |__Notch OFF hemilineage secondary neuron__|
adult CNS neuron                            |
 |__adult optic lobe neuron_________________|
glutamatergic neuron                        |
 |__adult glutamatergic neuron______________|
                                            lamina intrinsic neuron Lai  33 rec.
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Is a adult optic lobe neuron
lamina tangential neuron
optic lobe amacrine neuron
Notch OFF hemilineage secondary neuron
adult glutamatergic neuron
Develops from immature lamina intrinsic neuron
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VFB:FBbt_00003746