protocerebral neuroblast neuroblast BLVa4 neuroblast VLPl1 VLPl1 mapped to BLVa3/4 in Eckstein et al. (2024) - FBrf0259490 and Schlegel et al. (2024) - FlyBase:FBrf0260535. FBbt:00050103 Neuroblast that produces a secondary lineage of approximately 100-106 cells, with anterior somas, that collectively innervate the anterior ventrolateral protocerebrum, wedge and saddle (Yu et al., 2013; Ito et al., 2013). VFB:FBbt_00050103 fly_anatomy.ontology neuroblast VLPl1 type I neuroblast neuroblast BLVa3