The distribution of anti Mi 2 antibodies in CTD was analysed. The clinical characteristics of dermatomyositis between anti Mi 2 positive group and negative group were compared.

• 分析抗Mi 2抗体在CTD中的分布 ,并比较皮肌炎 (DM)患者中抗Mi 2抗体阳性组与阴性组的临床特点。