The Salk scientists focused on a biological "priming" system that keeps embryonic cells ready to become whatever kind of tissue they are destined to be.
索尔克的科学家侧重于研究生物“引爆”系统，让胚胎细胞时刻准备着变成预定要变成的任何种类的细胞组织。
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Most scientists think the moon was born when a huge object roaming the inner solar system - something about the size of Mars - smashed into the embryonic Earth.
大部分科学家认为月球在一块徘徊在太阳系内，大小几近火星的巨型物体撞击原始地球后产生。
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The studies were done in embryonic spinal cord in mice, although the same process ultimately takes place during development of any organ or bodily system, the researchers said.