粒细胞的核是分叶的，依据染色特征分为中性粒细胞，嗜酸性粒细胞，嗜碱性粒细胞。
Granulocytes have a segmented nucleus and are classified according to their staining characteristics as neutrophils, eosinophils, or basophils.
左侧可见一正常的、成熟的淋巴细胞，右侧是与其比较的分叶核嗜中性粒细胞。
A normal mature lymphocyte is seen on the left compared to a segmented PMN on the right.
随通气时间的延长分叶核细胞百分率下降，而巨噬细胞变化不大。
With the prolongation of ventilation, the percentage of segmented cells decreased, while there was little change of macrophagus.
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