Methods In 500 samples of speciniments with briefs on blood smears are stained and examined by microscope, 200 nucleated cells are classified and the percentages of all kinds of cells arc calculated.

• 方法 对500例仪器有提示的标本，染血涂片显微镜检查，分类200个有核细胞，计数各类细胞的百分比。