Malmberg M, Andreassen J, Malmberg G
Z Parasitenkd. 1985;71(6):747-57. doi: 10.1007/BF00926800.
Newly in vitro excysted tapeworms of Hymenolepis diminuta (Cestoda, Cyclophyllidea), 1- to 3-day-old worms and destrobilated worms from rat intestines were investigated by means of light microscopy (LM) and scanning electron microscopy (SEM). It was found that the scolex of 1- and 2-day-old worms had shallow suckers with smooth brims, while 3-day-old and older worms, including destrobilated worms, had deep suckers with puckered brims. The posterior end of 1- and 2-day-old worms had a central cone-shaped structure not present in 3-day-old and older, or destrobilated worms. The repairing of the posterior end and the protonephridial system after excystation or destrobilation was much the same. Tissue remnants moved into the centre of the posterior end, resulting in an indentation with a pore to the exterior. The indentation and its pore became connected to the emptying canals of the protonephridial system, i.e. they developed into the excretory bladder and pore respectively.
利用光学显微镜（LM）和扫描电子显微镜（SEM）对微小膜壳绦虫（绦虫纲，圆叶目）新体外脱囊的绦虫、1至3日龄的虫体以及来自大鼠肠道的去节片虫体进行了研究。结果发现，1日龄和2日龄虫体的头节有边缘光滑的浅吸盘，而3日龄及以上的虫体，包括去节片虫体，有边缘起皱的深吸盘。1日龄和2日龄虫体的后端有一个中央锥形结构，3日龄及以上或去节片虫体则没有。脱囊或去节片后，后端和原肾系统的修复情况大致相同。组织残余物移入后端中央，形成一个通向外部的带孔凹陷。该凹陷及其孔分别与原肾系统的排空管相连，即它们分别发育成排泄囊和排泄孔。
