近来，包涵体肌炎、皮肌炎、多发性肌炎中几种免疫细胞类型和免疫反应过程被认定。

Several immune system cell types and processes have been recently identified in muscle in inclusion body myositis dermatomyositis and polymyositis.

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目的：探讨多发性肌炎和皮肌炎起病不同时间的肌电图与肌酶的演变规律。

Objective:To study the difference of electromyography(EMG) and muscle enzyme(ME) in the progression of polymyositis(PM) and dermatomyositis(DM).

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结果 在确诊的146例多发性肌炎和皮肌炎患者中，107例（73.29%）首诊于皮肤科，仅4例（2.74%）首诊于肾脏科；

Results Of the 146 patients confirmed with polymyositis and dermatomyositis, 107(73.29%) visited Department of Dermatology first, while only 4(2.74%) visited Department of Nephrology first.

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