Plantlets of rooting-stage could survive on the sucrose-free medium .

生根培养阶段的非洲菊试管苗能生长在无蔗糖培养基上。

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Methods Human keratinocytes were primarily cultured in vitro with serum free medium.

方法以无血清培养基体外原代培养角质形成细胞。

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The model of dissociated cell cultures of human fetal pituitary in serum-free medium was established.

采用人胎脑垂体前叶分散细胞建立了无血清体外培养模型。

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The message is now free from the medium.

FORBES: The Undesigned Web

One measure is free grid connection for small-and-medium-scale solar power producers.

FORBES: China's Government To the Rescue As Solar Crisis Deepens

According to Twitter's terms of service, the user gives Twitter a "worldwide, nonexclusive, royalty-free license" to distribute tweets in any medium, even those that don't exist yet.

CNN: Heather Kelly,