part of develops from adult anterior anterior ventral commissure adult mesothoracic anterior anterior ventral commissure 2018-08-13T12:33:53Z Power's (1948) accessory prothoracic commissure is the mesothoracic anterior anterior ventral commissure in Court et al. (2020). FBbt:00047548 MesoTh aAV MesoNm aAV Thin commissure of a few fibers (Power, 1948) that is derived from the larval mesothoracic anterior ventral commissure, which becomes segregated into two (anterior and posterior) adult commissures (Court et al., 2020). It is formed by primary neurite bundles of hemilineage 1A (Court et al., 2020). It is found at the ventralmost margin of the mesothoracic neuromere, outside of the cell body rind, at the anterior of the neuromere (Court et al., 2020). APC VFB:FBbt_00047548 accessory prothoracic commissure fly_anatomy.ontology larval mesothoracic anterior ventral commissure adult mesothoracic neuromere