One probably made the cancer drug-resistant by enabling the tumor cells to pump chemotherapy drugs right out of the cell before they could do their work.

有一种突变的基因能够调控肿瘤细胞使其在化疗药物发挥作用前将药物泵出细胞外，从而具有抗药性。

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Being used prophylactically, nimodipine can prevent or relieve calcium overload, and can also protect membrane pump activities of cell membrane.

预防性应用尼莫地平可阻滞或减轻细胞内钙超载，同时还可保护细胞膜膜泵活性。

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Furthermore, a simple adjustable current cell in the charge pump is proposed for additional stability compensation and a novel VCO with linear gain is adopted to limit the total variation.

为了获得更加稳定的系统，在电荷泵中设计了结构简单的电流单元用于补偿额外的参数变化，并采用线性压控增益的VCO来减小参数的变化。

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Some cancers, though, are armored against taxanes: Their cell membranes carry a multiple-drug-resistance pump that identifies taxanes as a threat and pumps them out before they can infiltrate the cell.

FORBES: Taxol's Next Stand

To maintain the critical temperature, Dr Zheludev uses a small electronic heat pump known as a Peltier cell.

ECONOMIST: Optical communications: Swish switches | The

Those primeval life-forms use a simple type of cellular pump that pushes sodium out of the cell while pulling positively charged protons in.

MSN: Theorists pumped about origin of life idea - Technology & science - Science - LiveScience | NBC News