Pregnancy is a complicated process, it contains the early implantation of blastocyst and the embryonic development.

妊娠是一个复杂的过程，包括早期的胚胎着床及其之后的胚胎发育。

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The research greatly expanded knowledge about embryonic development as well as aging and disease.

该项研究大大扩展了我们对于胚胎发育以及衰老和疾病的认识。

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Humans are asymmetric animals. Early in our embryonic development, the heart turns to the left. The liver develops on the right. The left and right lungs have distinct structure.

人类是不对称的动物，在我们胚胎发育的早期，心脏就转向了左边，肺则往右长，而且左、右肺具有完全不同的结构。

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To start out I'm going to go back to the thinking about development a little bit, embryonic development, and show you a picture here.

作为这节课的开始,我先稍微回顾一下,一些关于发育过程的内容,先说胚胎发育,这里有张图

耶鲁公开课 - 生物医学工程探索课程节选

"We think we've found a common factor in the movement of embryonic cells during development and of cancer cells during the spread of the disease, " said Professor Stern.

BBC: NEWS | Health | Molecule 'helps cancer to spread'

That discovery has cast light on human embryonic development and, indeed, on the everyday working of adult bodies.

ECONOMIST: The 2002 Nobel prizes: Windows on the world | The

To solve the mystery, Dr Kandel, and his colleague Kausik Si, turned to embryonic development.

ECONOMIST: Prion proteins