包囊游仆虫皮层和营养核的超微结构研究

为研究纤毛虫在不同生理条件下结构的分化及其调节机理，本文应用透射电镜术显示，营养期包囊游仆虫背、腹面皮层表膜下含３种方式排列组成的纵微管层以及深部微管；口区皮层内含高电子密度的杆状小体；口围带小腹基部含电子致密带和小腹托架，棘毛基体基部及基体下微管束形成围棘纤维篮；背纤毛基体下方也含微管结构；大核染色质附着在核膜上，核膜其他区域有规则排列的核孔。

AN ULTRASTRUCTURAL STUDY ON CORTEX AND MACRONUCLEUS OF Euplotes encysticus

Fransmission electron microscopy reveals: (1) At the non-ciliated regions of this organism. under the pellicles of both dorsal and ventral cortex, there are longitudinal microtubule (MT) layers arranged in regUlar intervals: 3 MT per unit under dorsal pellicle, and 1 MT per unit under ventral pellicle, while under dorsal ridge pellicle, 10-20 MT per unit. Still, under all these MT layers, there are deeper MTs and conical mitochondria. (2) High electron-dense rods are present in the oral cortex. In cortex of ciliated regions, besides fellicles, basal bodies, and their related structures, there are membranelle bracket (formed by the connection of electron-dense bands with cylindrical fibrous matters) at the base of AZM mcmbranelles. On both sides of ciliated hasal bodies of cirral regions, there are surrounding fibrillar cirral baskets, formed by hasal body brackets and MT ribbons under hasal bodies.Still, beneath these brackets, there are again MT ribbons. Among these MTs under hasal bodies of dorsal cilia, some of them extend near to the MT ribbons under pellicle ridges. (3)Within the macronucleus, many chromatin attached to nuclear membrane, and many regularly arranged nuclear pores scattered on other regions of the membrane.