part of has soma location develops from neuroblast NB3-1 thoracic neuroblast NB3-1 lineage NB3-1 primary interneuron larval thoracic NB3-1 primary interneuron 3-1I of thorax See Bossing et al. (1996) for a diagram. fly_anatomy.ontology Larval primary interneuron that develops from neuroblast NB3-1 of the thorax. The projections of these interneurons form a fascicle that projects through the anterior commissure (Bossing et al., 1996). Unlike the fascicle formed by abdominal 3-1I, it does not show any appreciable bifurcation in the contralateral connective at embryonic stage 17 (Bossing et al., 1996). FBbt:00001480 VFB:FBbt_00001480 thoracic neuron nervous system of embryonic/larval thorax ventral ectoderm derivative larval interneuron primary interneuron larval thoracic neuromere cell body rind of larval thoracic neuromere