Objective To assay the concentration of neurotrophic factors secreted by human schwann cells that were cultured in vitro and to observe the time-concentration relationship.

目的测定体外培养的人雪旺氏细胞分泌神经营养因子在各时间点的浓度并观察其时间-浓度关系。

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The viability of rat glomerular endothelial cells was inhibited by ioversol in a concentration and time dependent manner.

非离子型低渗造影剂碘佛醇能显著降低大鼠肾小球内皮细胞存活率，并呈剂量和时间依赖性。

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The effects of fetal bovine serum (FBS) addition time, concentration and different culture systems on the developmental potentiality of bovine parthenogenetic embryos were observed.

试验研究了培养液中血清的添加时间和添加浓度及不同培养体系对黄牛孤雌胚胎体外发育潜力的影响。

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In truth, Jankovic's final steps to victory had more to do with the 12-time Grand Slam champion's lack of concentration than her own mental fortitude.

BBC: Jelena Jankovic beats Serena Williams in Rome

But to talk about rounding up and putting into something like a semi-concentration camp of this many people at one time, some of whom would be, you know, wouldn't even have any real idea as to why they were being handled that way.

NPR: Pick 'Em Up, Lock 'Em Up: Getting Tough On Gangs

The main complaint is that Mayer is fighting an inexorable shift to telecommuting and remote working that is giving millions better work-life balance, increased productivity and concentration, and less commute time and stress.

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