sends synaptic output to region male reproductive system fruitless expressing neuron male-specific neuron adult serotonergic neuron adult posterior abdominal ganglion neuron serotonergic abdominal giant (male) neuron 2013-11-21T17:03:13Z serotonergic-abdominal giant neuron SAbg neuron SAbg Male-specific, serotonergic neuron that is located in the posterior region of the abdominal ganglion. It expresses the male isoform of fruitless. There are eight of these neurons per organism in a dorsal cluster and they have relatively large cell bodies. They fasciculate with the abdominal nerve trunk and innervate the male reproductive organs. Members of this group innervate the testicular ducts, seminal vesicles, accessory glands and/or an anterior part of the ejaculatory duct. s-Abg neuron VFB:FBbt_00110663 FBbt:00110663 fly_anatomy.ontology adult male posterior abdominal ganglion neuron SAbg