part of fasciculates with directly develops from receives synaptic input in region sends synaptic output to region adult brain adult median bundle Pdf neuron close to tritocerebrum PDFTri Neuron with its soma located anteroventrally in the adult tritocerebrum that expresses Pdf (FBgn0023178) strongly until 24hrs after eclosion, after which Pdf immunoreactivity in the soma disappears (Helfrich-Forster, 1997). Within 2-4 days post-eclosion, Pdf immunoreactivity is also lost from the arborizations (Helfrich-Forster, 1997). There are 1-2 bilateral pairs of these in the pharate and newly-eclosed adult (Selcho et al., 2018). They arborize in the medial tritocerebrum around the periesophageal neuropils and in the gnathal ganglion, a varicose branch extends dorsally, via the median bundle, to the superior medial protocerebrum (Selcho et al., 2018). It has presynapses, postsynapses and peptidergic (Pdf) release sites in the subesophageal zone and the superior medial protocerebrum (Selcho et al., 2018). PDF-Tri fly_anatomy.ontology VFB:FBbt_00003766 pigment-dispersing hormone-immunoreactive neuron close to tritocerebrum FBbt:00003766 superior medial protocerebrum adult subesophageal zone output neuron adult Pdf neuron pupal Pdf neuron close to tritocerebrum adult subesophageal zone