绿藻类水网藻属（Hydrodictyon）或盘星藻属（Pediastrum）的合子在暂时静止启，生成2—4个有2条鞭毛的大形游动孢子，此游动孢子如果停止运动，即变成菱形的多角形休眠体，称为多角细胞。
双核、多倍体细胞、小叶及结节周围的肝细胞易呈明显阳性，一种小而核深染的多角细胞常呈强阳性。
A kind of thin, polygonal liver cells with one or two round or oval and deeply stained nuclei frequently stained strongly positive.
提取的骨髓基质细胞呈贴壁生长，诱导后可向成骨细胞分化，细胞呈成骨细胞形态为梭形和多角形。
BMSC grew by static adherence, differentiated to osteoblasts and had strong capacity of proliferation, the shape of cells was fusiform or polygon, like osteoblasts.
结果诱导后成纤维细胞细胞形态由梭形向软骨细胞样多角形、多边形转变。
Results After induction , fibroblasts changed their morphology from spindle shape to typical polygon shape of chondrocytes.
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