abnormal dorsal interneuron morphology abnormal dorsal interneuron 4 morphology abnormal dI4 morphology MP:0021095 MPheno.ontology any structural anomaly of the dorsal interneurons that are GABAergic, project ipsilaterally, are somatosensory associative, migrate to the deep dorsal horn, and are characterized by expression of Msx1, Ascl1, Gsh1, Gsh2, Lbx1, Pax2, Lhx1, Lhx5, and Ptf1a