（多选）移植所用的干细胞主要来源有（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31091' and id < 2501140 and id<>'2501140' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31091' and id > 2501140 and id<>'2501140' order by id asc limit 5