FB2025_05 , released December 11, 2025

General Information
Term	neuroblast BLAv1	ID (Ontology)	FBbt:00100612 (Fly Anatomy)
Definition	Neuroblast found in a relatively ventral location in the basolateral anterior (BLA) group, along the anterior edge of the optic lobe primordium, during the larval stage (Pereanu and Hartenstein, 2006; Hartenstein et al., 2015). Its primary lineage projects posteriorly, then medially, entering the ventrolateral protocerebrum (VLP) and some fibers continue medially to the great commissure (GC) (Hartenstein et al., 2015). It produces two secondary hemilineages, a posterior one that follows the tract of primary lineage through the VLP and GC and a medial one, that crosses the midline at the superior arch commissure (Wong et al., 2013). During metamorphosis, the hemilineage clusters move apart and the posterior hemilineage gains an additional, ventral, branch (Lovick et al., 2013). In the adult, each hemilineage cluster has approximately 60 cells (Yu et al., 2013; Ito et al., 2013).[ FlyBase:FBrf0194268 FlyBase:FBrf0221412 FlyBase:FBrf0221438 FlyBase:FBrf0223298 FlyBase:FBrf0223329 FlyBase:FBrf0229672 ]
Also Known As	"neuroblast BLAv1" ; "neuroblast VLPl&d1" ; "neuroblast VLPl_d1"
Comment
Links to External Ontologies
	VFB:FBbt_00100612
Annotations
Records annotated with this term OR any of its CHILD TERMS
No relevant records available
Records annotated with this exact term (annotations to child terms are NOT included)
No relevant records available
Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
No relevant statements available

General Information

Term

neuroblast BLAv1

ID (Ontology)

FBbt:00100612 (Fly Anatomy)

Definition

Neuroblast found in a relatively ventral location in the basolateral anterior (BLA) group, along the anterior edge of the optic lobe primordium, during the larval stage (Pereanu and Hartenstein, 2006; Hartenstein et al., 2015). Its primary lineage projects posteriorly, then medially, entering the ventrolateral protocerebrum (VLP) and some fibers continue medially to the great commissure (GC) (Hartenstein et al., 2015). It produces two secondary hemilineages, a posterior one that follows the tract of primary lineage through the VLP and GC and a medial one, that crosses the midline at the superior arch commissure (Wong et al., 2013). During metamorphosis, the hemilineage clusters move apart and the posterior hemilineage gains an additional, ventral, branch (Lovick et al., 2013). In the adult, each hemilineage cluster has approximately 60 cells (Yu et al., 2013; Ito et al., 2013).[ FlyBase:FBrf0194268 FlyBase:FBrf0221412 FlyBase:FBrf0221438 FlyBase:FBrf0223298 FlyBase:FBrf0223329 FlyBase:FBrf0229672 ]

Also Known As

"neuroblast BLAv1" ; "neuroblast VLPl&d1" ; "neuroblast VLPl_d1"

Comment

Links to External Ontologies

VFB:FBbt_00100612

Annotations

Records annotated with this term OR any of its CHILD TERMS

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

No relevant statements available

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	type I neuroblast neuroblast BLA
Part of
Synonyms & Secondary IDs
Synonyms
	"neuroblast BLAv1" EXACT HARTENSTEIN_BRAIN_LINEAGE[ FlyBase:FBrf0223298 ] "neuroblast VLPl&d1" EXACT ITO_LEE_BRAIN_LINEAGE[ FlyBase:FBrf0223298 ] "neuroblast VLPl_d1" EXACT
Secondary IDs

External Crossreferences & Linkouts
	VFB:FBbt_00100612

Spanning Tree View Settings

Parents/Children
View Depth

Relationships

Is a

type I neuroblast
neuroblast BLA

Part of

Synonyms & Secondary IDs

Synonyms

"neuroblast BLAv1" EXACT HARTENSTEIN_BRAIN_LINEAGE[ FlyBase:FBrf0223298 ]
"neuroblast VLPl&d1" EXACT ITO_LEE_BRAIN_LINEAGE[ FlyBase:FBrf0223298 ]
"neuroblast VLPl_d1" EXACT

Secondary IDs

External Crossreferences & Linkouts

VFB:FBbt_00100612