If it is cut in a plane different from the one used by the early investigators, it will not form two whole embryos.
如果在一个不同于早期研究人员所使用的平面上切割，就不会形成两个完整的胚胎。
The international trade in semen and embryos from cloned animals created in north and south America and beyond was effectively impossible to police.
在北美，南美以及其他一些地方生产的精子和克隆动物胚胎，其在国际范围内的交易已经无法加以有效监管。
Studying the fruit fly, a household nuisance but a time-honored experimental subject, has enabled the secrets of how embryos develop to begin to be unraveled by scientists.
果蝇在家中招人讨厌，但却是一个历史悠久的实验对象。通过研究果蝇，科学家们得以揭开胚胎发育的秘密。
Nearly a century ago, biologists found that if they separated an invertebrate animal embryo into two parts at an early stage of its life, it would survive and develop as two normal embryos.
近一个世纪前，生物学家发现，如果他们在无脊椎动物胚胎生命的早期阶段将其分成两部分，它会存活下来并发育成两个正常的胚胎。
The exact number of embryos lost to cryoinjury varies.
冷冻损伤胚胎的确切数目各不相同。
TJP2 is crucial during development as silencing inhibits blastocele formation in mouse embryos.
TJP2 在发育过程中至关重要，因为沉默会抑制小鼠胚胎中的胚泡形成。
Who will buy our cattle or embryos?
谁将购买我们的牛和胚胎？
Stem cells were recovered from these embryos.
干细胞就是从这些早期胚胎上得到的。
Have you ever looked at pictures of embryos?
你有没有看过胎儿的照片？
And the embryos bask in the oxygen given off by the algae.
胚胎也因为藻类产生的氧气而受益。
Stem cells found in embryos can spin off a wide range of tissue types.
胚胎干细胞可以分化成多种组织类型。
Precisely what doctors are supposed to do with these embryos is unclear.
医生们该拿这些胚胎怎么办，具体事项还不甚明了。
Without syncytin, mice developed deformed placentas, and their embryos died.
没有合胞体蛋白，老鼠的胎盘畸形生长，胚胎死亡。
At the moment human embryonic stem cells usually come from surplus IVF embryos.
目前，人类的胚胎干细胞通常来自于多余的IVF胚胎。
Former Massachusetts Gov. Mitt Romney opposes using embryos from fertility clinics.
前马萨诸塞州州长罗姆尼反对使用从生育诊所得来的胚胎。
But they could not agree on what to do with the three embryos that survived freezing.
但是，双方对如何处理冻存的三个胚胎无法达成一致。
"The obstetric outcome was a disaster," he admits, "but the embryos were chromosomally normal."
“产科产生这样的后果真是一场灾难，”他承认说，“但是从染色体来看，这些胚胎都是正常的。”
Some researchers are exploring whether such treatments could be done without destroying embryos.
一些研究人员正在探索这样的治疗方法是否可以不破坏胚胎。
Savage said that because of her beliefs she does not want to see the remaining embryos destroyed.
萨瓦奇说出于她的信仰，她不希望看见仅存的胚胎被毁坏。
Their embryos stayed in the U.S. laboratory but the test cells were flown to Oxford for analysis.
他们的胚胎保存在美国的实验室，而供检测的细胞被空运到牛津进行分析。
Some of the images of delicate embryos were taken by a regular Hasselblad camera with macro lens.
某些美妙胚胎图像是用带微距镜头的正规Hasselblad相机拍摄的。
Dr Spadafora showed recently that reverse transcriptase is required for mouse embryos to develop.
Spadafora博士最近的研究显示，逆转录酶在白鼠胚胎发育中是必需的。
The results of this study for the development of mouse embryos provide clues to the mechanism.
本研究的分析结果，可为鼠早期胚胎的发育机理研究提供线索。
Stem cells can be found inside human embryos, umbilical cords and bone marrow, among other sources.
干细胞从人类胚胎，脐带和骨髓等组织中提取。
Clearly, federal money cannot be used to create stem-cell lines if embryos are destroyed in the process.
显然，联邦资金不能用于创建干细胞系，如果在这个创建过程中胚胎遭到破坏的话。
The agency said in August it traced three bulls born in the UK with embryos from a cloned cow in the US.
英国食品标准局表示，今年八月份它追踪了三只用来自美国克隆牛胚胎在英国繁殖的牛。
The agency said in August it traced three bulls born in the UK with embryos from a cloned cow in the US.
英国食品标准局表示，今年八月份它追踪了三只用来自美国克隆牛胚胎在英国繁殖的牛。
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