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如何区分主细胞和壁细
更新时间: 2020-10-13 00:00:00  

主细胞:数量最多,主要分布于腺的体、底部。主细胞具有典型的蛋白质分泌细胞的结构特点,细胞呈柱状,核圆形,位于基部;胞质基部呈强嗜碱性,顶部充满酶原颗粒,但在普通固定染色的标本上,此颗粒多溶失,使该部位呈泡沫状。电镜下,有大量粗面内质网与发达的高尔基复合体,顶部有许多圆形酶原颗粒。

壁细胞:在腺的颈、体部较多,此细胞较大,多呈圆锥形。核圆而深染,居中,可有双核;胞质呈均质而明显的嗜酸性。电镜下,壁细胞胞质中有迂曲分支的细胞内分泌小管,管壁与细胞顶面质膜相连,并都有微绒毛。壁细胞的此种特异性结构于细胞的不同分泌时相而呈显著差异,壁细胞还有大量线粒体。

关键词: 如何 区分 细胞

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