ORN_DA4m [FBbt_00067001]

Adult olfactory receptor neuron (ORN) that expresses Or2a (Benton et al., 2025). Its dendrite transduces signals from intermediate sensillum ai3 (Benton et al., 2025). Its axon innervates antennal lobe glomerulus DA4, bilaterally (Benton et al., 2025). It develops from an Nab precursor (Benton et al., 2025). There are around 20 of these cells on each side (Grabe et al., 2016; Benton et al., 2025).

Tags:

ORN_DA4m

ID: FBbt_00067001

Adult Nervous system Olfactory system Sensory neuron

Olfactory stimulus unknown (Benton et al., 2025).

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## Classification

Relationships

develops from: antennal olfactory receptor neuron precursor Nab
expresses: Or2a
fasciculates with: adult antennal lobe commissure
has sensory dendrite in: antennal intermediate sensillum ai3
sends synaptic output throughout: antennal lobe glomerulus DA4m

Alternative Names

Synonym	Scope	Reference
ORN ai3b	exact synonym	Ronderos et al., 2014
odorant receptor neuron Or2a	exact synonym
ORN_DA4m	exact synonym	Bates et al., 2025
ORN_DA4m	exact synonym
ORN_DA4m	exact synonym	Berg et al., 2025
adult ORN Or2a	exact synonym
ORN (Or2a)	exact synonym	10397
ORN_DA4m	exact synonym	Scheffer et al., 2020
ORN at3A	exact synonym	de Bruyne and Baker, 2008
ORN_DA4m	exact synonym	Schlegel et al., 2024
ORN at3X	related synonym	Menuz et al., 2014
odorant receptor neuron DA4m	related synonym

List all available images of ORN_DA4m (108 total)

Thumbnail	Name	Tags
	ORN_DA4m_L (MaleCNS:294818716)	Nervous_system, Sensory_neuron, Olfactory_system, Adult
	ORN_DA4m_L (MaleCNS:512079673)	Nervous_system, Sensory_neuron, Olfactory_system, Adult
	ORN_DA4m_L (MaleCNS:512079673)	Nervous_system, Sensory_neuron, Olfactory_system, Adult
	ORN_DA4m_L (MaleCNS:571842)	Nervous_system, Sensory_neuron, Olfactory_system, Adult, Cholinergic
	ORN_DA4m_L (MaleCNS:782825749)	Nervous_system, Sensory_neuron, Olfactory_system, Adult