一期梅毒患者，检查病原体应取的标本是：

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24318' and id < 2098891 and id<>'2098891' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24318' and id > 2098891 and id<>'2098891' order by id asc limit 5