Calvo J, Boya J, Garcia-Mauriño J E, Lopez-Carbonell A
Department of Histology and General Embryology, Faculty of Medicine, University Complutense, Madrid, Spain.
J Anat. 1988 Oct;160:67-73.
The light and electron microscopic features of pigmented cells in the adult dog pineal gland have been described. The presence of pigmented cells was a constant characteristic of the dog pineal gland, though wide variations in the amount of pigment could be found among different animals. Conversely, the localisation of pigmented cells was very constant on the basal surface of the proximal region of the pineal gland. Frequently, clusters of pigmented cells were seen in the posterior commissure and the neighbour meningeal spaces, near the pigmented pineal zone. The pineal pigment has been identified as melanin according to its morphological features and histochemical properties. Several types of granules were identified ultrastructurally, apparently corresponding to different stages of a maturation process. The pigmented cells were identified as a special type of pinealocyte according to their ultrastructural features.
本文描述了成年犬松果体中色素细胞的光镜和电镜特征。色素细胞的存在是犬松果体的一个恒定特征，尽管不同动物之间色素含量存在很大差异。相反，色素细胞在松果体近端区域的基底表面定位非常恒定。色素细胞簇常见于后连合以及松果体色素沉着区附近的脑膜间隙。根据松果体色素的形态学特征和组织化学特性，已鉴定其为黑色素。超微结构鉴定出几种类型的颗粒，显然对应于成熟过程的不同阶段。根据色素细胞的超微结构特征，将其鉴定为一种特殊类型的松果体细胞。
