Ambrose N C, Riley J
Department of Biological Sciences, The University, Dundee.
Tissue Cell. 1988;20(3):381-404. doi: 10.1016/0040-8166(88)90072-9.
The histology and development of three extensive glands in the porocephalid pentastomid Porocephalus crotali is described by light and electron microscopy, during growth of the parasite to an infective stage in the tissues of mouse; the infective stage in rattlesnake definitive hosts is also included. These glands elaborate excretory/secretory components which are channelled, via chitin-lined efferent ductules, on to the parasite cuticle. Hook and frontal glands are relatively compact, and within each gland ductules serving individual secretory lobules collect into common ducts which discharge over each of the four hooks, or at the anterior margin of the cephalothorax respectively. Subparietal gland cell lobules, composed of two large and two small secretory cells, are distributed under the cuticle and each is served by a single efferent ductule; these erupt over the entire cuticle. The large cells in subparietal glands secrete lamellate droplets which coat the cuticle with thin layers. Identical cells are found in hook and frontal glands, in addition to to three morphologically distinct types of protein secretory cell. Preliminary data on the composition and immunological properties of the various secretory products are presented.
利用光学显微镜和电子显微镜描述了猪带吻头虫（Porocephalus crotali）体内三个大型腺体的组织学结构和发育过程，该寄生虫在小鼠组织内生长至感染阶段，同时也涵盖了其在响尾蛇终末宿主体内的感染阶段。这些腺体分泌排泄/分泌成分，通过内衬几丁质的传出小导管输送至寄生虫的角质层。钩腺和额腺相对紧凑，每个腺体内服务于各个分泌小叶的小导管汇集到共同的导管中，分别在四个钩的每个上方或头胸部的前缘排出。顶下腺细胞小叶由两个大的和两个小的分泌细胞组成，分布在角质层下方，每个小叶由单个传出小导管提供服务；这些小导管在整个角质层上开口。顶下腺中的大细胞分泌层状小滴，在角质层上形成薄层覆盖。除了三种形态上不同类型的蛋白质分泌细胞外，在钩腺和额腺中也发现了相同的细胞。文中还给出了各种分泌产物的组成和免疫特性的初步数据。
