stage 3 neuroblast neuroblast NB4-1 lineage 14 neuroblast fly_anatomy.ontology FBbt:00001397 neuroblast 14 VFB:FBbt_00001397 lineage NB4-1 neuroblast NB 14 neuroblast NB4-1 Neuroblast that delaminates at S3 in the medial column and produces the transverse nerve motor neuron, as well as a variety of interneurons (Schmid et al., 1999). In the embryo, one of these cells can be found in each hemisegment from S1-A9 (Birkholz et al., 2013; Urbach et al., 2016). In the larva, it resumes proliferation in all thoracic segments (Lacin and Truman, 2016). The neurons that develop from this neuroblast after larval hatching form postembryonic lineage 14 (Lacin and Truman, 2016). segmentally-repeated neuroblast