The result under electronmicroscope showed that the mitochondrion of muscle fiber increased in number,the sarcoplasmic reticulum and transverse tubule decreased and developed poorly.

• 电镜下肌纤维线粒体多，三联管结构少、发育差；病变肌纤维呈细胞水肿和肌原纤维破坏的表现；