part of mesectoderm embryonic neuroblast embryonic ventral midline neuroblast Neuroblast of the embryonic ventral midline that is a precursor to larval ventral midline neurons, which are found in the ventralmost part of the ventral nerve cord (Kearney et al., 2004). There are four of these cells per neuromere and each divides once to produce two progeny cells (Kearney et al., 2004). fly_anatomy.ontology VFB:FBbt_00005565 FBbt:00005565 midline neuroblast of ventral nervous system somatic cell of ectoderm embryonic midline of ventral nerve cord