查询词典 sac

Amniocentesis is the removal of fluid from the amniotic sac.

羊膜穿刺术是从羊膜囊抽取羊水的技术。

BACKGROUND: Compared with adult mesenchymal stem cells, yolk sac-derived MSCs of early embryo have stronger self-renewal capacity and plasticity. Moreover, they could differentiate into angioblast and hemopoietic stem cells during embryonic development and trigger embryonic angiogenesis and hemopoietic tissue development.

背景：与成体间充质干细胞相比，来源于早期胚胎的卵黄囊间充质干细胞有更强的自我更新能力和可塑性，且在胚胎发育过程中可分化为成血管细胞和造血干细胞，启动胚胎血管发生和造血组织发育。

Observations on intact transparent ovaries under inverted differential interference microscope showed that the antipodal cells in the embryo sac disappeared at 4 days after pollination.

用粳稻84_15与水稻喜峰杂交，在杂种第二代选育出中新一号比秋光增产11%，已种植F10代农艺性状保持一致。

In the"poly-egg apparatus embryo sac",three egg-apparatuses are the majority which canbe further divided into three subtypes,namely,"5-2-1"type,"6-2-0"type and"5-3-0"type,based on the position of antipodal cell.

三卵卵器结构胚囊&依反足细胞的位置又可分出&5-2-1&型、&6-2-0&型和&5-3-0&型等三种亚类型。&

Could be observed on 10th day after pollination, archesporial cell on 20thday, megasporocyte on 24th day, the functional megaspore on 30th day; and 8-nucleate embryo sac on 41th day. And then double fertilization finish and early globular embryo emerg.

授粉10 d出现指状突起，20 d形成胚珠原基，24 d大孢子母细胞发生，30 d功能大孢子形成，41 d发育为成熟的八核胚囊，而后完成双受精发育成早期球形胚。

In the same way that an inner tube pushes through a damaged tire, the inner lining of the abdomen pushes through the weakened area of the abdominal wall to form a small balloonlike sac.

就像一个轮胎，当外胎损坏了后内胎会从破损处膨出一样，腹壁内部结构会通过薄弱的腹壁处膨出，形成一个囊。

If the egg sac is not destroyed within 10 seconds, it will explode, summoning a Broodling who will do a 30m call for help with infinite amount of targets.

如果10秒内没有摧毁的话，它就会爆炸，召唤一只幼蛛，这只幼蛛会在30m 的范围内召唤无穷的目标提供支援。

Nasal stump of most of the fresh canalicular lacerations can be found directly, a few could be found by curved needle, stump in individual patients with anatomical abnormalities or old canalicular laceration need to be found with lacrimal sac incision.

大多数新鲜泪小管断裂可以直接找到鼻侧断端，少数可以用弯针法找到，个别解剖异常患者或陈旧性泪小管断裂患者需用泪囊切开法。

Methods There were four characteristics compared to the conventional dacryocystorhinostomy:(1) need not cut inner canthal ligament;(2) two U-shape petals in the lacrimal sac and nasal mucosa,(3) need not suture between the two petals,(4) did not placed the tube during the operation or after the operation.

在传统的泪囊鼻腔吻合术的基础上进行了4方面改良：内眦韧带不断离；做泪囊和鼻粘膜两个&U&型瓣，两瓣上面填充可止血和吸收的明胶海绵；两瓣间无需缝合；术中及术后不放置引流管。

Doetschman TC, Eistetter H, Kemler R, et al. The in vitro development of blastocyst-derived embryonic stem cell lines: formation of visceral yolk sac, blood islands and myocardium ［J］. J Embryol Exp Morph, 1985,87:27～45.［2］ Robbins J, Doetschman T, Jones WK, et al. Embryonic stem cell as a model for cardiogenesis［J］. Trends Cardiovasc Med, 1992,2:44～50.［3］ Moreadith RW, Radford NB.

被诱导的心肌细胞的判定除常规指标外，我们还用了心脏特异性引物β-MHC对不同收缩时间的心肌细胞总RNA进行RT-PCR扩增和RNA斑点杂交，发现该心肌细胞不仅具有正常心肌细胞的特性，而且在分化早期就高度地表达心脏特异性基因。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。