8岁男孩，患贫血2年余，全血细胞减少，网织红细胞0.01，骨髓增生活跃。疑诊为再生障碍性贫血。进一步检查哪项对诊断最有意义

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28352' and id < 2318964 and id<>'2318964' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28352' and id > 2318964 and id<>'2318964' order by id asc limit 5