He added a small amount of water into the test tube.

他往试管中加入了少量的水。

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Researchers wearing white lab coats wander into the corridor, occasionally opening huge chest freezers in search of test-tube samples.

穿着白大褂的研究人员，在走廊里走来走去。偶尔会打开大冰箱，找找试管样本。

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In the late 1980s, they discovered that although a linear string of amino acids can fold into its proper three-dimensional shape in a test tube, the protein cannot do this on its own within a cell.

他们在20世纪80年代晚期发现，尽管一串线性氨基酸可以在试管中折叠成特定的三维形状，但蛋白质自身不能在细胞内完成这一过程。

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The fibroblasts are grown in a test tube and then implanted into tissue near the stomach.

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The first so-called test-tube baby, Louise Brown, whom he helped bring into the world, was born in 1978.

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The more promising candidates were then cooked up and injected into a test tube holding a notoriously resistant form of ovarian cancer preserved from years ago.

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