sends synaptic output to region inferior posterior slope octopaminergic AL2 neuron octopaminergic AL2i neuron 2012-10-08T04:42:58Z ipsilateral octopaminergic neuron of the antennal lobe The neurotransmitter was assessed by immunostaining with an anti-octopamine (OA) antibody in cells labelled with tdc2-GAL4 (FBti0101786) and NP7088-GAL4 (FBti0037217). Post- versus pre-synaptic innervation was determined using the postsynaptic marker Rdl-HA or the presynaptic marker Synaptotagmin-HA (Busch et al., 2009). OA-AL2i fly_anatomy.ontology FBbt:00110140 VFB:FBbt_00110140 OA-AL2i Octopaminergic neuron of the AL2 cluster which innervates the ipsilateral optic lobe. Secondary processes originating in the posterior slope terminate in the optic lobe, forming varicose terminals. In the posterior slope, thin processes branch off the neurite that projects to the optic lobe, innervating the ventral inferior posterior slope forming varicose terminals. There are four different subtypes of AL2i neurons, AL2i1-4, which differ in their arborization patterns (Busch et al., 2009).