part of has fasciculating neuron projection develops from larval prothoracic posterior intermediate commissure adult posterior intermediate commissure adult prothoracic dorsal posterior intermediate commissure 2021-01-11T13:24:25Z Commissure of the adult prothoracic neuromere that is derived from the larval prothoracic posterior intermediate commissure and is formed by hemilineage 19B neurons (Court et al., 2020). It is the most dorsal of the adult posterior intermediate commissures in this neuromere and it crosses the midline close to, but anterior to, the prothoracic posterior dorsal commissure (Court et al., 2020). prothoracic dPI ProNm dPI FBbt:00048155 VFB:FBbt_00048155 fly_anatomy.ontology hemilineage 19B secondary neuron adult prothoracic neuromere