part of has fasciculating neuron projection develops from larval mesothoracic posterior intermediate commissure adult posterior intermediate commissure adult mesothoracic anterior posterior intermediate commissure 2021-01-11T13:39:04Z Commissure of the adult mesothoracic neuromere that is derived from the larval mesothoracic posterior intermediate commissure and is formed by hemilineage 5B neurons (Court et al., 2020). It is the most anterior of the adult posterior intermediate commissures in this neuromere (Court et al., 2020). mesothoracic aPI VFB:FBbt_00048483 FBbt:00048483 fly_anatomy.ontology MesoNm aPI lineage 5 secondary neuron adult mesothoracic neuromere