A.有髓神經(jīng)纖維軸索Wallerian變性 B.無髓神經(jīng)纖維變性 C.有髓神經(jīng)纖維節(jié)段性脫髓鞘 D.無髓神經(jīng)纖維Wallerian變性 E.有髓神經(jīng)纖維軸索和髓鞘同時(shí)受累