This study provided direct evidence that lymphokine activated NK cells are effectors of LAK cells.

本文结果对淋巴因子激活的NK细胞是LAK的效应细胞提供了直接证明。

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But the school staff has not told students about two of their classmates who are missing after waves pulverized the Khao Lak, Thailand, hotel where their family was staying.

CNN: Treating children's emotional wounds

Lak has, he hopes, at least two years left in India - what are his plans?

BBC: Daniel Lak biography