develops from VUM precursor larval VUM neuron larval interneuron primary interneuron larval GABAergic neuron larval VUM interneuron 2012-11-26T04:46:45Z fly_anatomy.ontology ventral unpaired median interneuron Neurotransmitter was assessed by the expression of the glutamic acid decarboxylase 1 (Gad1) and the putative GABA vesicular transporter VGAT (FBgn0033911) (Wheeler et al., 2006). VFB:FBbt_00110182 iVUM FBbt:00110182 Vi Ventral unpaired interneuron that is located ventrally in the embryonic/larval ventral nerve cord midline, ventral to the VUM motorneurons. It is a GABAergic neuron. There are three of these cells per segment.