The embryonic heart starts to beat around the 22nd day of pregnancy.

胎儿时期的心脏在怀孕后22天左右后开始跳动。

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To find out, he and his colleagues grew embryonic heart cells on matrixes of differing stiffness.

为了找到答案，他和他的同事在不同硬度的基质上培育胚胎心脏细胞。

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It will be valuable for further research into the effects of chemical factors on embryonic heart development.

进一步开展化学因素对胚胎心脏发育的基础及相关临床研究将有着重要的意义。

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And Geron of Menlo Park, Calif. is performing animal studies on a variety of different cells derived from human embryonic stem cells, aiming to treat spinal cord injury, heart disease and diabetes.

FORBES: Magazine Article

And Geron (nasdaq: GERN - news - people ) of Menlo Park, Calif. is performing animal studies on a variety of different cells derived from human embryonic stem cells, aiming to treat spinal cord injury, heart disease and diabetes.

FORBES: Despite Bush Veto, Stem Cell Research Abounds

In related news, researcher Shinya Yamanaka in Japan has turned mouse skin cells into cells that are indistinguishable from the embryonic kind--meaning, that they can conceivably be turned into heart cells, liver cells or just about any other kind of cell scientists want to study or, eventually, use as a therapy.

FORBES: Stem Cell Science Heats Up