has characteristic expresses receives synaptic input in region Ptth peptide hormone secreting cell larval brain larval PTTH neuron of pars lateralis PG neuron fly_anatomy.ontology VFB:FBbt_00007457 prothoracic gland innervating neuron PG-LP FBbt:00007457 PTTH neuron Larval neurosecretory neuron that secretes prothoracicotropic hormone (PTTH) and innervates the prothoracic gland (Siegmund and Korge, 2001; McBrayer et al., 2007). It has its soma in the cortex of the lateral protocerebrum (Siegmund and Korge, 2001). It runs along the anterior brain at the cortex/neuropil interface, forming dendritic collaterals, before traversing the midline and entering the contralateral nervus corporis cardiaci to reach the ring gland (Siegmund and Korge, 2001; Huckesfeld et al., 2021). Its peptide release sites are found in the corpus cardiacum and the prothoracic gland (Siegmund and Korge, 2001; Huckesfeld et al., 2021). It expresses corazonin receptor and has close contact with corazonin neurons in the prothoracic gland (Imura et al., 2020). There are two of these cells per hemisphere (Siegmund and Korge, 2001). McBrayer et al. (2007) used enhancer trap expression to confirm that their PG neurons are identical to the PG-LP neurons identified by Siegmund and Korge (2001). PG-LP larval prothoracic gland innervating neurosecretory neuron of the lateral protocerebrum larval l-NSC PTTH prothoracic gland innervating neuron embryonic/larval corpus cardiacum innervating neuron larval neurosecretory cell of pars lateralis bilateral