fasciculates with LN period neuron LNd neuron FBbt:00004045 dorsolateral neurons dorsal adult lateral neuron Projection of axons vs dendrites judged on the basis of the presence (dendrites) or absence (axons) of synaptobrevin (Helfrich-Forster et al., 2007). VFB:FBbt_00004045 LNd Lateral period-expressing neuron (LN) of the adult brain whose cell body is located in the dorsal-most cluster of LNs. There are six of these cells per hemisphere (Schubert et al., 2018; Ma et al., 2021). Initially all LNds follow the anterior optic tract (AOT) to the surface of the lateral horn (LH) (Schubert et al., 2018). These neurons project axons to the dorsal protocerebrum and terminate predominantly in the neuropil region close to the pars intercerebralis. These projections overlap with those of the DN neurons and many project contralaterally through the dorsal fusion commissure. These cells are a heterogeneous population with different combinations of cryptochrome (CRY), ion transport peptide (ITP) and neuropeptide F (sNPF) expression (Schubert et al., 2018). They are evening cells (Liang et al., 2016; Liang et al., 2017; Delventhal et al., 2019). fly_anatomy.ontology LNd adult evening cell adult anterior optic tract