Barton B R, Hertig A T
J Anat. 1975 Nov;120(Pt 2):227-38.
Quiescent oocytes of the monkey Cebus albifrons were examined with the electron microscope. In many respects the ultrastructure of these cells was similar to that of other mammalian species. Elongate and oval mitochondria, lamellar Golgi complexes, small profiles of smooth endoplasmic reticulum, and vacuolar organelles were randomly distributed around a round nucleus which usually contained a nucleolus and clumps of heterochromatin. Among the unusual morphological characteristics of these oocytes are 'membranous aggregates', membrane-bound organelles containing a complex of convoluted membranes, some very dense rod-like structures and a droplet of moderate density which resembles lipid. A similar droplet is frequently found in mitochondria. Rough endoplasmic reticulum is abundant in many of these oocytes, forming parallel arrays and concentric rings around the nucleus. Folded membrane complexes, apparent elaborations of smooth endoplasmic reticulum, are frequently found in the cytoplasm in continuity with cisternae of smooth and rough endoplasmic reticulum and associated with vesicles which often contain flocculent material. The morphology of Cebus oocytes suggests a greater rate of steroid and protein synthesis, transport, and storage than is usually indicated by the ultrastructure of other mammalian oocytes.
用电子显微镜对白头卷尾猴的静止卵母细胞进行了检查。在许多方面，这些细胞的超微结构与其他哺乳动物的相似。细长的椭圆形线粒体、板层状高尔基体复合体、光滑内质网的小轮廓以及泡状细胞器随机分布在一个圆形细胞核周围，该细胞核通常含有一个核仁和异染色质团块。这些卵母细胞不同寻常的形态特征包括“膜状聚集体”，即含有卷曲膜复合体、一些非常致密的棒状结构以及一滴中等密度、类似脂质的物质的膜结合细胞器。类似的液滴在许多线粒体中也经常发现。在许多这类卵母细胞中，粗面内质网丰富，围绕细胞核形成平行排列和同心环。折叠膜复合体显然是光滑内质网的精细结构，经常在细胞质中发现，与光滑和粗面内质网的池相连，并与通常含有絮状物质的小泡相关。白头卷尾猴卵母细胞的形态表明，其类固醇和蛋白质的合成、运输及储存速率比其他哺乳动物卵母细胞的超微结构通常所显示的要高。
