In 3-month-course group, all the changes above appeared to be more serious with capillarectasia, basement membrane thickened, rod-cell nucleus pyknosis and metachromatin condensed.

病程 3 月组，上述改变加重，毛细血管扩张、基底膜增厚，视杆细胞核固缩、异染色质浓集；

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These molecules of DNA, very long molecules of DNA, are condensed and packaged within the nucleus of every cell in your body.

这些DNA分子是非常长的,它们通过折叠等方式压缩形成染色体后,被装配在你身体内的每一个细胞内

耶鲁公开课 - 生物医学工程探索课程节选