Brunanská M
Parasitological Institute, Slovak Academy of Sciences, Kosice.
Folia Parasitol (Praha). 1994;41(2):149-53.
The oogonia and oocytes in the ovaries of Toxocara canis are joined to a cytoplasmic process called the rachis. The rachis is a much branched cytoplasmic mass without cell components in the germinal zone. At the end of the germinal zone and in the growth zone the cytoplasmic mass is formed into a central axial cylinder, containing small dense granules, lipid drops and glycogen. Throughout the growth zone shell granules similar to those present in the oocytes are also present in the rachis. Anterior to the opening of the ovaries into the oviduct the rachis disappears. The ovarian wall is composed of epithelial cells, adjoining the basal lamina. They are characterized by the presence of large numbers of mitochondria, especially in the germinal zone. The epithelial cells in the growth zone also contain rough endoplasmic reticulum, ribosomes and bundles of microfibrils. A dense tubular material occurs between the basal membrane of the epithelial cells and the basal lamina as well as in the wall intercellular spaces in the ovarian growth zone. Multivesicular labyrinth-like formations can also be observed in the epithelial intercellular spaces in the central portion of the T. canis ovary.
犬弓首蛔虫卵巢中的卵原细胞和卵母细胞与一个称为轴丝的细胞质突起相连。轴丝是生发区一个多分支的无细胞成分的细胞质团块。在生发区末端和生长区，细胞质团块形成一个中央轴柱，其中含有小的致密颗粒、脂滴和糖原。在整个生长区，轴丝中也存在与卵母细胞中类似的壳粒。在卵巢开口进入输卵管之前，轴丝消失。卵巢壁由上皮细胞组成，邻接基膜。其特征是存在大量线粒体，尤其是在生发区。生长区的上皮细胞还含有粗面内质网、核糖体和成束的微原纤维。在卵巢生长区上皮细胞的基膜与基膜之间以及壁细胞间隙中存在致密的管状物质。在犬弓首蛔虫卵巢中央部分的上皮细胞间隙中也可观察到多囊泡迷宫样结构。
