METHODS: The routine he staining, colloidal iron staining, immunohistochemistry and transmission electron microscopy were used.
方法：采用常规he染色光镜观察、胶体铁染色、免疫组织化学染色和透射电镜观察。
METHODS: The routine he staining, colloidal iron staining, immunohistochemistry and transmission electron microscopy were used.
方法：采用常规he染色光镜观察、胶体铁染色、免疫组织化学染色和透射电镜观察。
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