肿瘤组织分化越低，说明（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30910' and id < 2487413 and id<>'2487413' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30910' and id > 2487413 and id<>'2487413' order by id asc limit 5