That's because twins often share vital organs, like a heart or brain.

这是因为双胞胎通常共享重要的器官，比如心脏或大脑。

youdao

Other epigenetic processes appear to occur randomly, while others are normal, such as those that guide embryonic cells as they become heart, brain, or liver cells, for example.

其他的表观遗传过程似乎是随机发生的，而其他过程则是正常的，比如那些引导胚胎细胞成为心脏、大脑或肝细胞的过程。

youdao

Strokes and heart attacks occur when blockages in the arteries supplying the brain or heart muscles cut off the supply of blood to tissues.

当供应大脑或心脏肌肉的动脉阻塞，进而切断组织血液供应时，就会出现中风和心脏病发作的情况。

youdao

Clots can block the flow of blood to the heart or brain and cause a heart attack or stroke.

VOA: special.2009.10.20

But instead of those signals going to your heart they go into the brain.

但这些电信号针对的不是心脏而是大脑

耶鲁公开课 - 生物医学工程探索课程节选

All of your cells have the same DNA, so the same genetic information, and yet cells in your brain, and cells in your heart, and cells in your kidney do very different things.

你所有的细胞都有相同的DNA,带有相同的遗传信息,尽管你大脑里的细胞,心脏上的细胞,肾里的细胞发挥着不同的功能

耶鲁公开课 - 生物医学工程探索课程节选

Broken pieces of the brain, heart or liver could be replaced--repairing damage done by accidents or illness.

FORBES: Magazine Article

In humans they sit on nerve cells throughout the body--in the brain, heart and stomach and on skeletal muscle.

FORBES: Magazine Article

Anesthesiologists paralyze patients undergoing sensitive surgeries on the spine, brain or heart by bathing cellular receptors with strong muscle relaxants.

FORBES: Magazine Article