has part has part has_part characteristic of has modifier node of Ranvier abnormal axon morphology abnormal node of Ranvier morphology MP:0010732 csmith any structural anomaly of the short unmyelinated segments of an axon between myelinated segments, where voltage gated channels accumulate and regenerate an action potential as it is conducted along the axon abnormal node 2010-11-09T01:51:31Z MPheno.ontology morphology abnormal