FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term dorsal margin photoreceptor cell R8 ID (Ontology) FBbt:00004209 (Fly Anatomy)
Definition R8 photoreceptor of the dorsal rim area of the retina. It expresses the UV-detecting Rhodopsin 3 and extends to medulla layer M6, where it synapses to Dm-DRA2 (Sancer et al., 2019). In expression and morphology it is more similar to R7 cells than other R8 cells (Sancer et al., 2019).[ FlyBase:FBrf0051852 FlyBase:FBrf0243430 ]
Also Known As "DRA R8" ; "R8-DRA" ; "R8d"
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VFB:FBbt_00004209
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 dorsal margin photoreceptor cell R8 (all annotations which use CV term, excluding "NOT" statements)
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inner photoreceptor cell
 |__photoreceptor cell R8_____________
eye photoreceptor cell                |
 |__dorsal margin photoreceptor cell__|
adult cholinergic neuron              |
 |__photoreceptor cell R8_____________|
dorsal margin ommatidium              |
 |__dorsal margin photoreceptor cell__|
                                      dorsal margin photoreceptor cell R8  16 rec.
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VFB:FBbt_00004209