Special proteins in the barrier transport necessary nutrients and substances into the brain.

屏障中的特殊蛋白质负责运输大脑所需的营养及物质。

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Transport of protein across the alveolar epithelial barrier is a critical process in recovery from pulmonary edema.

蛋白的跨肺泡上皮屏障转运在肺水肿液的清除中发挥着重要作用。

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Drugs may cross a biologic barrier by passive diffusion, facilitated passive diffusion, active transport, or pinocytosis.

药物可通过被动扩散、易化被动扩散、主动转运或胞饮作用等方式穿越生物屏障。

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The experience of Turin's Lingotto, a complex that suffers from inadequate public transport, underlines how local planning rules can be another barrier to success in regeneration schemes.

ECONOMIST: Urban regeneration

Inadequate practical support to help older people at home, with transport, or with care for dependent spouses and other family presents another barrier to treatment.

BBC: Elderly cancer treatment 'shame'