abnormal ventral interneuron morphology abnormal ventral interneuron 2 morphology any structural anomaly of the ventral interneurons that project ipsilaterally, extend axons caudally across several segments, have both excitatory (V2a) and inhibitory (V2b) subclasses, and are characterized by expression of Chx10, Gata3, Irx3, and Lhx3 MPheno.ontology MP:0021104 abnormal V2 morphology