protocerebral neuroblast type I neuroblast neuroblast BLD4 2011-07-11T03:36:26Z neuroblast LHl1 FBbt:00100623 Neuroblast with a relatively anterior position in the BLD group (Pereanu and Hartenstein, 2006). It has descendants that enter the superior lateral protocerebrum and join the intermediate superior transverse fascicle (Lovick et al., 2013; Hartenstein et al., 2015). At the secondary stage, one hemilineage continues to follow this route and another follows a more ventrally-directed tract that reaches the anterior ventrolateral protocerebrum (Lovick et al., 2013). VFB:FBbt_00100623 fly_anatomy.ontology neuroblast BLD4 neuroblast BLD