典型的句子：The third principle that contributed to the discovery of induced pluripotency was the observation that lineageassociated transcription factors—which help to establish and maintain cellular identity during development by driving the expression of cell type-specific genes while suppressing lineage-inappropriate genes—can change cell fate when ectopically expressed in certain heterologous cells.写简单句会死人吗？不会。写复制句会死人吗？会，我和………………
发表于 2010-10-27 21:39
发表于 2010-10-28 00:08
