成熟促进因子是在（）合成的。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30529' and id < 2465293 and id<>'2465293' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30529' and id > 2465293 and id<>'2465293' order by id asc limit 5