In normal cells, MLL combines with four proteins that comprise the W-RAD group to create a molecular switch that controls DNA packaging events required to form white blood cells.

在正常细胞中，MLL与其他四种蛋白联合组成了W-RAD复合体，从而形成了在白细胞形成中所需的一种控制DNA组合的分子开关。

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Wang L., Jiang W. scopus Co-culture mode of tissue-engineered tracheal epithelial cells and fibroblasts: Comparison with routine culture. 2008.

王琳，姜威。构建组织工程气管上皮细胞和成纤维细胞联合培养的模式：与常规培养的比较。

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On Aug. 9, President George W. Bush said the government would fund research on stem cells created by destroying some 60 embryos.

FORBES: Stem-Cell Numbers Game

In his State of the Union address, President George W. Bush advocated outlawing all use of cloning technology on human cells.

FORBES: Magazine Article

President George W. Bush 's decision to allow federal funding for research on stem cells derived from human embryos does not change this.

FORBES: Hold Off On Investing In Stem Cells