Magnetism of the bar magnet is produced by the surface molecule electric current.

磁块的磁性，是由磁块的表面分子电流产生的。

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No tumor cell, so far as is known, produces a specific surface molecule for toxins to act on.

就目前所知，没有肿瘤细胞有能使毒素作用的特殊表面分子。

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Objective To observe contineously on the cell surface molecule of Dexter culture of cord CD34 + cells in vitro.

目的：探讨骨髓间充质干细胞对脐血CD34+细胞诱导分化为巨核细胞的影响。

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So, it doesn't need to bind to a receptor on the surface of the cell in order to work because the molecule can actually enter the cell directly.

所以无需与细胞表面受体相结合来起效,因为这些分子能直接进入细胞

耶鲁公开课 - 生物医学工程探索课程节选

In this case, a receptor tyrosine kinase is a receptor molecule that binds a ligand at its surface outside the cell and initiates this enzyme activity - this kinase activity - and causes phosphorylation of another molecule.

在这个例子中,酪氨酸激酶受体可以,在细胞表面区域与配体结合,从而激发出,激酶的活性,使其能够磷酸化另一类分子

耶鲁公开课 - 生物医学工程探索课程节选

Well, the way that your immune system recognizes it is that all the cells of our body express a molecule on their surface, a membrane protein called the MHC1 complex.

而免疫系统识别的方法是,身体内所有细胞在其表面表达一种分子,一种叫做MHC1复合体的膜蛋白

耶鲁公开课 - 生物医学工程探索课程节选

Stephen Wilson, a chemist at New York University, discovered that the surface of the fullerene molecule could be used as a scaffold to support other molecules.

ECONOMIST: Nanotechnology in biology

Any particle with a target molecule on its surface will stick to the spin valve.

ECONOMIST: Labs on a chip

In nature, this would usually be a molecule on the surface of some invading nasty such as a virus or bacterium, but antibodies that will stick to just about anything can be made artificially to order.

ECONOMIST: Medical diagnostics