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汉语拼音：xì bāo fēn liè

细胞一分为二的过程。是细胞繁殖的方式。分裂前的细胞称为母细胞，分裂后形成的新细胞称为子细胞。可分无丝分裂、有丝分裂和减数分裂。

• Cancer is a term used for diseases in which abnormal cells divide without control and are able to invade other tissues.

  癌症是用来形容具有异常的失控的细胞分裂，并能侵入其他组织的疾病的一个术语。

• These findings are extremely important for the understanding of cell division regulation, which is often disrupted in cancer cells.

  这些研究发现对了解细胞分裂规则至关重要，癌症细胞中正确的分裂规则常常是遭到破坏的。

• Meiosis is a special form of cell division that takes place in the reproductive organs that produce sex cells.

  减数分裂过程中是一种特殊形式的细胞分裂，发生在生殖器官性细胞。

• Mice with broken legs seem to be healing three times faster than normal, thanks to a protein that makes stem cells divide.

  断腿的小白鼠在一种能促使干细胞分裂的蛋白质作用下，其骨愈合速度比正常时快了三倍。

• Examination of bacterial division using modern techniques has shown that this is not always so.

  使用现代技术对细胞分裂进行检测所的结果表明情况并非如此。

• The problem he encountered was that each time the cells divided, the mini-chromosomes degraded, until eventually they vanished completely.

  他遇到的难题是，每当细胞分裂时，微型染色体就会退化，直到最终它们完全消失。

• When scientists examined the pair's DNA, they found a mutation in a gene called DEC2, which governs cell production and circadian rhythm.

  科学家们通过检测这对DNA发现一个叫作DEC2发生了突变，而这个基因正是控制细胞分裂和生理周期的。

• After a few hours dividing in a Petri dish, researchers implanted the cloned embryo into a surrogate mother.

  经过培养皿中几个小时的细胞分裂后，研究人员把克隆胚胎植入代孕狗妈妈的身体里。

• Ellenberg and his colleagues more than doubled the number of genes that are known to be involved in mitosis, a type of cell division.

  Ellenberg和他的同事们提高了参与有丝分裂（细胞分裂的一种类型）基因数量两倍以上。