FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

primary pigment cell precursor

ID (Ontology)

FBbt:00007370 (Fly Anatomy)

Definition

Precursor of the primary pigment cells of the retina. From 10 hours after puparium formation, these cells are part of an unstructured pool of undifferentiated cells surrounding each developing ommatidial core. Around 20-23 hours APF, the primary pigment cell precursors leave this pool and become part of the ommatidia.[ FlyBase:FBrf0103328 ]

Comment

DISAMBIGUATION: The term interommatidial precursor cell is sometimes used to refer to precursors of primary pigment cells as well as secondary and tertiary pigment cells (e.g. Larson et al., 2008), even though primary pigment cells are not interommatidial cells. This is not the case here.

Links to External Ontologies

Annotations

Records annotated with this term OR any of its CHILD TERMS

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Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Alleles (FBal)	PHENOTYPE_MANIFEST_IN
Insertions (FBti)	PHENOTYPE_MANIFEST_IN

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Alleles	Genes	Insertions
primary pigment cell precursor (all annotations which use CV term, excluding "NOT" statements)
primary pigment cell precursor \| pupal stage P6 \| increased number		--	--

Spanning Tree (Parents/Children)

developing material anatomical entity__
somatic cell___________________________|
                                       somatic precursor cell
                                        |__primary pigment cell precursor  4 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	somatic precursor cell
Part of
Synonyms & Secondary IDs
Synonyms

Secondary IDs

External Crossreferences & Linkouts