推荐回答(1个)
粒细胞系统分为骨髓内的原始粒细胞、早幼粒细胞、中幼粒细胞、晚幼粒细胞以及外周血中的杆状核细胞和分叶核细胞。
(1)原始粒细胞:胞体直径10~18μm,圆形或类椭圆形。
胞核较大,约占细胞的2/3以上,核染色质呈细粒状,排列均匀,无浓集,核膜较模糊。核仁2~5个,较小,清楚。 胞质量少,呈透明天蓝色,绕于核周,无颗粒。
(2)早幼粒细胞:胞体直径12~20μm,圆或椭圆形。
胞核大,核染色质较原粒粗糙,核仁可见或消失。胞质量较多,呈淡蓝、蓝或深蓝色,浆内含紫红色非特异性的天青胺蓝颗粒。
(3)中幼粒细胞:①中性中幼粒细胞:胞体直径10~18μm,圆形。 胞核椭圆形或一侧开始扁平,占细胞的2/3~1/2,染色质聚集成索块状,核仁消失。
胞质量多,内含中等量、大小较一致的特异的中性颗粒。②嗜酸性中幼粒细胞:胞体直径15~20μm,胞核与中性中幼粒细胞相似。胞质内充满粗大、均匀、排列紧密、桔红色的特异的嗜酸性颗粒。③嗜碱性中幼粒细胞:胞体直径10~15μm。
胞核椭圆形,轮廓不清楚,核染色质较模糊。胞质内及核上含有数量不多、排列零乱、大小不等的紫黑色特异的嗜碱性颗粒。
(4)晚幼粒细胞:①中性晚幼粒细胞:胞体直径10~16μm,呈圆形,胞核明显凹陷,但其凹陷程度一般不超过核假设直径的一半。
核染色质粗糙,排列更紧密。 胞质量多,染浅红色,充满中性颗粒。②嗜酸性晚幼粒细胞:胞体直径10~16μm,胞核在中央或偏一侧,呈肾形或椭圆形。胞质充满着嗜酸性颗粒。③嗜碱性晚幼粒细胞:胞体直径10~14μm。
胞核固缩呈肾形,轮廓模糊。胞质内及核上含有少量、分布不匀的嗜碱性颗粒。
(5)杆状核细胞:①中性杆状核粒细胞:胞体直径10~15μm,圆形。 胞核凹陷程度超过核假设直径的一半,核径最窄处大于最宽处1/3以上,形态弯曲成带状,核染色质粗糙呈块状,核两端钝圆染深紫红色。
胞质充满中性颗粒。②嗜酸性杆状核粒细胞:胞体直径11~16μm,圆形。胞核与中性杆状核粒细胞相似。胞质充满着粗大的桔红色嗜酸性颗粒。③嗜碱性杆状核粒细胞:胞体10~12μm。 胞核呈模糊杆状。
胞质内及胞核上含有紫黑色、大小不匀、数量较少的嗜碱性颗粒。
(6)分叶核粒细胞:①中性分叶核粒细胞:胞体直径10~14μm,圆形源自医。学教育。网。胞核分叶状,常分2~5叶,核染色质浓集或呈较多小块。
胞质丰富,浆内分布着细小紫红色中性颗粒。②嗜酸性分叶核粒细胞:胞体直径11~16μm,胞核多分为两叶。 胞质充满着粗大呈桔红色嗜酸性颗粒。③嗜碱性分叶核粒细胞:胞体直径10~12μm,胞核可分3~4叶或分叶不明显。
胞质嗜碱性颗粒呈紫黑色,大小不一,分布不均,常掩盖在核上。
表 粒细胞胞质中四种颗粒的鉴别 中性颗粒嗜酸性颗粒嗜碱性颗粒嗜苯胺蓝颗粒大小细小大小一致粗大大小不一致最粗大大小不一较中性颗粒粗大大小不一形态细颗粒状圆形或椭圆形态不一形态不一数量多多不一定、常不多少量或中等量色泽淡紫红或淡红色橘红色或暗红色深紫红或深紫黑色紫红色分布均匀均匀分布不
一、常覆盖核上分布不
一、有时覆盖核上。
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