part of overlaps larval ventral nerve cord larval ventral nerve cord commissure Commissure of the ventral nerve cord at late embryonic or larval stages. There are two main commissures per segment, anterior and posterior, but the posterior commissure is not present in A9 (Landgraf et al., 2003; Birkholz et al., 2015). In some segments, at some stages these can be further divided into multiple components along the dorsal-ventral axis (Truman et al., 2004; Birkholz et al., 2015; Hartenstein et al., 2018). VFB:FBbt_00001104 FBbt:00001104 fly_anatomy.ontology larva neuron projection bundle of larval ventral nerve cord ventral nerve cord commissure