心肌细胞核染色质结构接近正常；
Nucleolus chromatin structure of cardiomyocytes was close to normal;
大鼠心肌细胞核采用差速离心和密度梯度离心分离提纯。
Velocity and isopyknic gradient centrifugation was employed to fractionate rat myocardial nuclei.
目的研究小鼠死后骨骼肌细胞核DNA降解与死亡时间的关系。
Objective To study the relationship between changes of DNA degradation and the postmortem interval.
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