part of has soma location develops from larva cell body rind of the central nervous system larval midline neuron Larval unpaired primary neuron with its cell body found along the midline of the nervous system (Fontana and Crews, 2012). There are around 18 of these per segment in the late embryo, which are derived from midline precursors (MP1-6) or the median neuroblast (MNB) (Fontana and Crews, 2012). Two sets of neurons can be distinguished; ventral neurons (including MP3 and VUM neurons) and medial neurons (including MP1 and MNB descendants) (Kearney et al., 2004). fly_anatomy.ontology VFB:FBbt_00016016 FBbt:00016016 ventral ectoderm derivative primary neuron midline neuroblast of ventral nervous system unpaired neuron larval CNS neuron