protocerebral neuroblast type I neuroblast neuroblast VPNv1 2013-05-22T11:24:12Z VFB:FBbt_00110401 neuroblast VPNv1 FBbt:00110401 fly_anatomy.ontology This lineage originates in the optic lobe and its neuroblast of origin has not been demonstrated in the larva (Schlegel et al., 2024 - FlyBase:FBrf0260535). Neuroblast that generates a clone of adult neurons that collectively innervate the lobula and the posterior ventrolateral protocerebrum (Ito et al., 2013). It has approximately 51 progeny at the adult stage (Ito et al., 2013).