细胞进行的下列生命活动中，能说明细胞已经发生分化的是

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21523' and id < 1871007 and id<>'1871007' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21523' and id > 1871007 and id<>'1871007' order by id asc limit 5