The results showed, There were necrosis at distal extremity of feather pulp and large amounts of tumor cells in the feather pulp.
结果显示，羽髓远端坏死，羽髓中有多量肿瘤细胞浸润，肿瘤细胞呈弥漫性或局部性浸润。
The pathological changes of the feather pulp were examined by the methods of postmortem, histopathology and ultrastructural pathology.
通过光镜、电镜等方法对鸡马立克氏病羽髓组织进行了形态学研究。
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