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番鸭甲状腺实质由大小不一、近似球形的滤泡组成,其上皮细胞呈低立方形至扁平形.电镜下的滤泡上皮细胞,胞质内存在多量由被吞饮的胶状质与溶酶体相结合的胶质滴,线粒体外围有以核糖体规律排列的粗面内质网,网腔内多被低密度的无定形内容物所扩大.番鸭甲状腺实质存在滤泡旁细胞(C细胞).经Ehrlich苏木素染色的滤泡旁细胞呈球形、体积大、染色较浅,单个散在或2个并列位于滤泡外围的结缔组织内,不与滤泡腔接触,可明显与滤泡上皮细胞相区别.
Muscovy duck thyroid parenchyma by the size of the approximate spherical follicles, the epithelial cells showed a low cuboid to flat shape.Electron microscope follicular epithelial cells, the cytoplasm of a large number of swollen by swollen gelatin and soluble The glial droplets combined with the enzyme body, the periphery of the mitochondria has a rough endoplasmic reticulum arranged by ribosomes, and the network cavity is mostly enlarged by the low-density amorphous contents. Muscovy duck thyroid gland has parafollicular cells (C Cells). The perfollicular cells stained by Ehrlich hematoxylin were spherical, bulky, and stained lightly, with single scattered or two connective tissues located in the periphery of the follicles and not in contact with the follicular cavity, Cell differentiation.