One of the other things that MHC1 does, in addition to marking yourselves as your own, is that it's capable of making combinations with all the different molecules that are present inside the cell and expressing them on the surface, and sort of showing them to the outside world.

HC1的另一项功能,除了给你标记一个独一无二的标签以外,MHC可以和细胞内所有不同的,分子结合 使其能够呈现在细胞表面,使其暴露于外界

耶鲁公开课 - 生物医学工程探索课程节选

Algerian gas and electricity company, CEEG opened the tender late last month to local and international outfits, marking one step towards a progressive national goal of 650MW by 2015 and building towards 22, 000MW by 2030, with output almost evenly split between domestic and export demand.

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Vladimir Putin will be one step closer to becoming the next Russian president, marking his second coming at the Kremlin.

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One such order would force foreign manufacturers to place an indelible marking on products that shows country of origin.

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