许多细胞核发生了核浓缩,接着出现核碎裂和核溶解现象.用英语怎么说？

许多细胞核发生了核浓缩,接着出现核碎裂和核溶解现象.

Many nuclei have become shrunken and dark and have then undergone karorrhexis ( fragmentation ) and karyolysis ( dissolution ).

many

adj. 许多，多的；pron. （与复数动词连用）大多数人；

例句
There are many people who still find the act of abortion abhorrent.
仍有很多人对堕胎行为表示厌恶。

nuclei

n. 核，核心，原子核(nucleus的复数形)，（原子）核( nucleus的名词复数 )，中心，核心；

例句
The nuclei of endosperm are amitosis and its division is not synchronous.
胚乳核为无丝分裂,分裂不同步.

have

aux. 用以构成完成式及完成式的不定式，表示已经…；vt. 有，具有，拿，取得，从事，必须，不得不；n. 〈口〉有产者，有钱人，富国，〈英俚〉欺骗，诈骗；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

become

vi. 变为，成为，变得，变成；vt. 适合，适宜，相称，相当，变成，发生；

例句
...abandoned buildings that become a breeding ground for crime.
沦为了犯罪温床的弃置楼群

shrunken

--

例句
Many nuclei have become shrunken and dark and have then undergone karorrhexis ( fragmentation ) and karyolysis ( dissolution ).
许多细胞核发生了核浓缩,接着出现核碎裂和核溶解现象.

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

dark

adj. 黑暗的，乌黑的，忧郁的，神秘的；n. 黑暗，暗色，暗处；

例句
In the dark my sense of hearing becomes so acute.
黑暗中我的听觉变得异常灵敏。

then

adv. 那时，然后，那么，话说回来；adj. 当时的，那时的；

例句
Liz adjusted her mirror and then edged the car out of its parking bay.
莉兹调了调后视镜，将车子挪出了停车位。

undergone

v. 经历，承受( undergo的过去分词 )；

例句
Can you possibly imagine all the horrors we have undergone since I last wrote you?
你能想象得出自从我上次给你写信以来我们所经历的所有可怕事情吗？

fragmentation

n. 分裂，破碎；

例句
We can't accept the fragmentation or balkanization of the country.
我们不能接受使国家分裂或巴尔干化的行为。

karyolysis

n. 核溶解；

例句
Many nuclei have become shrunken and dark and have then undergone karorrhexis ( fragmentation ) and karyolysis ( dissolution ).
许多细胞核发生了核浓缩,接着出现核碎裂和核溶解现象.

dissolution

n. 溶解，融化，（社团等）解散，<律> 离婚，腐朽，崩溃；

例句
He stayed on until the dissolution of the firm in 1948...
他一直呆到 1948 年公司解散。