Methods: Electron microscopy, reticulum fiber stain and ELISA test were used to observe the pathologic pro - cess of pulmonary fibrosis and to determine the change of collagen content.
方法：应用电子显微镜，网状纤维染色和ELISA方法检测大鼠肺纤维化的病理过程和胶原含量的改变。
Methods: Electron microscopy, reticulum fiber stain and ELISA test were used to observe the pathologic pro - cess of pulmonary fibrosis and to determine the change of collagen content.
方法：应用电子显微镜，网状纤维染色和ELISA方法检测大鼠肺纤维化的病理过程和胶原含量的改变。
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