protocerebral neuroblast type I neuroblast neuroblast BLP1 2011-07-11T03:38:34Z fly_anatomy.ontology VFB:FBbt_00100625 neuroblast BLP1 FBbt:00100625 neuroblast VPNp4 VPNp4 lineage is a subset of VPNp&v1 (BLP1) (Schlegel et al., 2024 - FBrf0260535). neuroblast VPNp&v1 Neuroblast whose neuronal lineage has relatively dorsal somas in the BLP group during the larval stage (Pereanu and Hartenstein, 2006; Hartenstein et al., 2015). Similar to BLP2, these neurons project anteriorly toward the junction between the optic lobe (or optic neuropil) and the ventrolateral protocerebrum (Hartenstein et al., 2015). During metamorphosis, the BLP3 and BLP4 somas migrate, to move dorsal to BLP1 and BLP2 (Lovick et al., 2013). In the adult its secondary lineage innervates the ventrolateral protocerebrum with additional projections to the posterior lateral protocerebrum and inferior protocerebrum (Wong et al., 2013). neuroblast BLP