Toxic minerals would first be absorbed by roots but later relocated to the stem and leaves.

有毒的矿物质首先被根部吸收，然后转移到茎和叶上。

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The first is an automatic, metabolic system whose control is centered in the brain stem.

第一种是自发的新陈代谢系统，它的控制集中在脑干上。

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Arousal is at first general, with a flooding of impulses in the brain stem; then gradually the activation is channeled.

一开始觉醒是普遍的，在脑干中有大量的脉冲，然后激活作用逐渐被输送。

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He heads the first-ever clinical trial of umbilical cord stem cells with cerebral palsy patients.

VOA: special.2011.02.01

The way we did this was to coax embryonic stem cells first to develop into the surface layer.

我们是这么做的,先诱导胚胎干细胞,发育成外胚层。

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It was the first place where the concept of stem cells was developed, in that if one looks carefully one can find immature cells in the bone marrow.

这是干细胞概念的发祥地,如果仔细观察造血系统,就能找到骨髓中的未成熟细胞

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Liao's crusade led to the first stem cell treatment for epidermolysis bullosa, also known as EB.

CNN: A mother's plea: Heal my children's skin

The company announced that its first stem cell product to enter clinical trials, PDA-001, recently showed very early and very dramatic results in a few Crohn's disease patients.

FORBES

At Cornell University, researchers are experimenting with using 3D printers to print food that could be eaten by astronauts in space, and scientists in Edinburgh successfully 3D-printed embryonic stem cells for the first time, demonstrating how 3D-printing technology could one day eliminate the need for organ donation.

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