...柄结构）从外植体或愈伤组织中吸取营养，而且极易 从外植体或愈伤组织表面分离，出现所谓的生理隔离 （physiological isolation）现象。 与合子胚相比： 合子胚在发育初期具有明显的胚柄，而体细胞胚一般没有真正的胚 柄只有类似胚柄的结构。
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This paper summarized their basic physical and chemical characters, physiological activities, isolation and toxicological study.
本文综述了其基本理化性质、生理功效、提取制备及安全毒理等。
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During the 17-plus-months of their virtual voyage, the crew took part in various studies to assess the effect their isolation was having on their psychological and physiological well being.
BBC: Simulated Mars mission 'lands' back on Earth
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