Shigenaka Y, Iwata S
Cytobios. 1984;41(162):113-26.
The cyst formation process was investigated in a large heliozoan Echinosphaerium nucleofilum, with particular reference to the resorption of axonemal microtubules and nuclei into the cytoplasm. As the encystation proceeded, the axonemal microtubules were found to disassemble from their distal ends by being surrounded or invaded with many tubular vesicles, followed by detaching at their proximal ends from the nuclear envelope and by disassembling completely at the final stage. On the other hand, several nuclei were found to be enclosed by large vacuoles before they were destroyed or digested and finally absorbed into the cytoplasm. At this stage, one or two large multi-layered bodies were formed inside the nucleus. The meanings of the resorption of microtubules and nuclei were considered and discussed.
在大型太阳虫类的核丝球棘虫中研究了包囊形成过程，特别关注轴丝微管和细胞核吸收进入细胞质的情况。随着包囊化进程的推进，发现轴丝微管从其远端开始被许多管状小泡包围或侵入，从而发生解体，随后在近端从核膜脱离，并在最后阶段完全解体。另一方面，发现几个细胞核在被破坏或消化并最终吸收进入细胞质之前被大液泡包围。在此阶段，细胞核内形成一两个大型多层体。对微管和细胞核吸收的意义进行了思考和讨论。
