目的比较研究人与猪肝门静脉细胞核密度间的异同，为猪与人异种肝移植提供理论依据。
Objective To study the cellular nuclear density difference of the hepatic portal vein between the human and pig and provide evidence for pig- to-human liver xenotransplantation.
结果老年大鼠造牙本质细胞核出现切迹，内含大量异染色质；
Results The nuclei of the odontoblasts of the aging rats were notched and contained a large amount of heterochromatins.
透射电镜显示，胞质内细胞器稀少，细胞核大，核内具有丰富的异染色质；
Results With phase contrast microscope, the rapidly adherent cells were uniformed small, large nucleus and epithelial-like.
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