ExR3 [FBbt_00047035]

Adult serotonergic extrinsic ring neuron that follows the longitudinal superior medial fascicle and innervates the superior medial and intermediate protocerebrum, the crepine, the lateral accessory lobe and a dorsal layer of the fan-shaped body, with mixed terminals (Omoto et al., 2018; Hulse et al., 2021). It has mainly presynaptic terminals in both (bilateral) bulbs and the inner central domain of the ellipsoid body (Omoto et al., 2018; Hulse et al., 2021). There is one of these cells per hemisphere and it develops from neuroblast DM6 (Kandimalla et al., 2023).
ExR3 ExR3 ExR3 ExR3

ExR3

ID: FBbt_00047035

Adult Serotonergic lineage DM6 CM3

Adult serotonergic extrinsic ring neuron that follows the longitudinal superior medial fascicle and innervates the superior medial and intermediate protocerebrum, the crepine, the lateral accessory lobe and a dorsal layer of the fan-shaped body, with mixed terminals (Omoto et al., 2018; Hulse et al., 2021). It has mainly presynaptic terminals in both (bilateral) bulbs and the inner central domain of the ellipsoid body (Omoto et al., 2018; Hulse et al., 2021). There is one of these cells per hemisphere and it develops from neuroblast DM6 (Kandimalla et al., 2023).

Previously assigned to DM3 in Omoto et al. (2018), but same authors assign to DM6 in Kandimalla et al. (2023).

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## Classification

Relationships

Alternative Names

Synonym Scope Reference
PMPD neuron broad synonym Omoto et al., 2018
posterior medial protocerebrum dorsal cluster neuron broad synonym Omoto et al., 2018
ExR3 exact synonym Berg et al., 2025
ExR3 exact synonym Bates et al., 2025
ExR3 exact synonym Schlegel et al., 2024
ExR3 exact synonym Scheffer et al., 2020
ExR3 exact synonym