Methods:Aspired and smeared the bone marrowin post iliac crest first,then got the borne marrow tissue by trephine biopsy at same place.Put the bone marrow tissue on a clear glass make the print.

• 方法:常规髂后上嵴骨髓穿刺涂片,用环钻法获取骨髓组织制成印片,印片与涂片同时进行染色并进行细胞分类计数及形态观察。